From 32b293cd9cfd411216ffbafd9bbe3be1cd69e0b8 Mon Sep 17 00:00:00 2001
From: andy wharmby <wharmby@php.net>
Date: Fri, 16 Jan 2009 12:53:07 +0000
Subject: [PATCH] New string function tests. Tested on Windows, Linux and Linux
 64 bit.

---
 .../tests/strings/addslashes_variation1.phpt  |  12 +-
 ext/standard/tests/strings/bin2hex_basic.phpt |  50 ++++
 ext/standard/tests/strings/bin2hex_error.phpt |  43 +++
 .../tests/strings/bin2hex_variation1.phpt     | 128 +++++++++
 ext/standard/tests/strings/bug37262.phpt      |   4 +-
 ext/standard/tests/strings/bug45166.phpt      |  10 +
 ext/standard/tests/strings/chr_basic.phpt     |  27 ++
 ext/standard/tests/strings/chr_error.phpt     |  34 +++
 .../tests/strings/chr_variation1.phpt         | 135 +++++++++
 .../strings/convert_cyr_string_basic.phpt     |  54 ++++
 .../strings/convert_cyr_string_error.phpt     |  73 +++++
 .../convert_cyr_string_variation1.phpt        | 139 ++++++++++
 .../tests/strings/convert_uudecode_basic.phpt |  54 ++++
 .../tests/strings/convert_uudecode_error.phpt |  35 +++
 .../strings/convert_uudecode_variation1.phpt  | 161 +++++++++++
 .../tests/strings/convert_uuencode_basic.phpt |  88 ++++++
 .../tests/strings/convert_uuencode_error.phpt |  35 +++
 .../strings/convert_uuencode_variation1.phpt  | 161 +++++++++++
 .../tests/strings/count_chars_basic.phpt      | 116 ++++++++
 .../tests/strings/count_chars_error.phpt      |  36 +++
 .../tests/strings/count_chars_variation1.phpt | 262 ++++++++++++++++++
 .../tests/strings/count_chars_variation2.phpt | 178 ++++++++++++
 22 files changed, 1827 insertions(+), 8 deletions(-)
 create mode 100644 ext/standard/tests/strings/bin2hex_basic.phpt
 create mode 100644 ext/standard/tests/strings/bin2hex_error.phpt
 create mode 100644 ext/standard/tests/strings/bin2hex_variation1.phpt
 create mode 100644 ext/standard/tests/strings/bug45166.phpt
 create mode 100644 ext/standard/tests/strings/chr_basic.phpt
 create mode 100644 ext/standard/tests/strings/chr_error.phpt
 create mode 100644 ext/standard/tests/strings/chr_variation1.phpt
 create mode 100644 ext/standard/tests/strings/convert_cyr_string_basic.phpt
 create mode 100644 ext/standard/tests/strings/convert_cyr_string_error.phpt
 create mode 100644 ext/standard/tests/strings/convert_cyr_string_variation1.phpt
 create mode 100644 ext/standard/tests/strings/convert_uudecode_basic.phpt
 create mode 100644 ext/standard/tests/strings/convert_uudecode_error.phpt
 create mode 100644 ext/standard/tests/strings/convert_uudecode_variation1.phpt
 create mode 100644 ext/standard/tests/strings/convert_uuencode_basic.phpt
 create mode 100644 ext/standard/tests/strings/convert_uuencode_error.phpt
 create mode 100644 ext/standard/tests/strings/convert_uuencode_variation1.phpt
 create mode 100644 ext/standard/tests/strings/count_chars_basic.phpt
 create mode 100644 ext/standard/tests/strings/count_chars_error.phpt
 create mode 100644 ext/standard/tests/strings/count_chars_variation1.phpt
 create mode 100644 ext/standard/tests/strings/count_chars_variation2.phpt

diff --git a/ext/standard/tests/strings/addslashes_variation1.phpt b/ext/standard/tests/strings/addslashes_variation1.phpt
index 1cef57a3c5..9a35732fe3 100644
--- a/ext/standard/tests/strings/addslashes_variation1.phpt
+++ b/ext/standard/tests/strings/addslashes_variation1.phpt
@@ -41,8 +41,8 @@ $values =  array (
   // float values
   10.5,
   -10.5,
-  10.5e10,
-  10.6E-10,
+  10.1234567e10,
+  10.7654321E-10,
   .5,
 
   // array values
@@ -95,8 +95,8 @@ for($index = 0; $index < count($values); $index ++) {
 // closing the file
 fclose($file_handle);
 
-echo "Done\n";
 ?>
+===DONE===
 --EXPECTF--
 *** Testing addslashes() : with non-string type argument ***
 
@@ -118,9 +118,9 @@ unicode(4) "10.5"
 -- Iteration 6 --
 unicode(5) "-10.5"
 -- Iteration 7 --
-unicode(12) "105000000000"
+unicode(12) "101234567000"
 -- Iteration 8 --
-unicode(7) "1.06E-9"
+unicode(13) "1.07654321E-9"
 -- Iteration 9 --
 unicode(3) "0.5"
 -- Iteration 10 --
@@ -169,4 +169,4 @@ NULL
 unicode(0) ""
 -- Iteration 26 --
 unicode(0) ""
-Done
+===DONE===
diff --git a/ext/standard/tests/strings/bin2hex_basic.phpt b/ext/standard/tests/strings/bin2hex_basic.phpt
new file mode 100644
index 0000000000..e150bfdada
--- /dev/null
+++ b/ext/standard/tests/strings/bin2hex_basic.phpt
@@ -0,0 +1,50 @@
+--TEST--
+Test bin2hex() function : basic functionality 
+--FILE--
+<?php
+
+/* Prototype  : string bin2hex  ( string $str  )
+ * Description: Convert binary data into hexadecimal representation
+ * Source code: ext/standard/string.c
+*/
+
+echo "*** Testing bin2hex() : basic functionality ***\n";
+
+// array with different values for $string
+$strings =  array (
+
+  //double quoted strings
+  b"Here is a simple string",
+  b"\t This String contains \t\t some control characters\r\n",
+  b"\x90\x91\x00\x93\x94\x90\x91\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f",
+  
+   //single quoted strings
+  b'Here is a simple string',
+  b'\t This String contains \t\t some control characters\r\n',
+  b'\x90\x91\x00\x93\x94\x90\x91\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f',
+);  
+
+// loop through with each element of the $strings array to test bin2hex() function
+$count = 1;
+foreach($strings as $string) {
+  echo "-- Iteration $count --\n";	
+  var_dump(bin2hex($string));
+  $count ++;
+}  
+?>
+===DONE===
+--EXPECT--
+*** Testing bin2hex() : basic functionality ***
+-- Iteration 1 --
+unicode(46) "4865726520697320612073696d706c6520737472696e67"
+-- Iteration 2 --
+unicode(102) "09205468697320537472696e6720636f6e7461696e7320090920736f6d6520636f6e74726f6c20636861726163746572730d0a"
+-- Iteration 3 --
+unicode(36) "9091009394909195969798999a9b9c9d9e9f"
+-- Iteration 4 --
+unicode(46) "4865726520697320612073696d706c6520737472696e67"
+-- Iteration 5 --
+unicode(112) "5c74205468697320537472696e6720636f6e7461696e73205c745c7420736f6d6520636f6e74726f6c20636861726163746572735c725c6e"
+-- Iteration 6 --
+unicode(144) "5c7839305c7839315c7830305c7839335c7839345c7839305c7839315c7839355c7839365c7839375c7839385c7839395c7839615c7839625c7839635c7839645c7839655c783966"
+===DONE===
diff --git a/ext/standard/tests/strings/bin2hex_error.phpt b/ext/standard/tests/strings/bin2hex_error.phpt
new file mode 100644
index 0000000000..1db1b48526
--- /dev/null
+++ b/ext/standard/tests/strings/bin2hex_error.phpt
@@ -0,0 +1,43 @@
+--TEST--
+Test bin2hex() function : error conditions 
+--FILE--
+<?php
+
+/* Prototype  : string bin2hex  ( string $str  )
+ * Description: Convert binary data into hexadecimal representation
+ * Source code: ext/standard/string.c
+*/
+
+echo "*** Testing bin2hex() : error conditions ***\n";
+
+echo "\n-- Testing bin2hex() function with no arguments --\n";
+var_dump( bin2hex() );
+
+echo "\n-- Testing bin2hex() function with more than expected no. of arguments --\n";
+$extra_arg = 10;
+var_dump( bin2hex("Hello World", $extra_arg) );
+
+echo "\n-- Testing bin2hex() function with Unicode string --\n";
+var_dump( bin2hex("Hello World") );
+
+?> 
+===DONE===
+--EXPECTF--
+*** Testing bin2hex() : error conditions ***
+
+-- Testing bin2hex() function with no arguments --
+
+Warning: bin2hex() expects exactly 1 parameter, 0 given in %s on line %d
+NULL
+
+-- Testing bin2hex() function with more than expected no. of arguments --
+
+Warning: bin2hex() expects exactly 1 parameter, 2 given in %s on line %d
+NULL
+
+-- Testing bin2hex() function with Unicode string --
+
+Warning: bin2hex() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+NULL
+ 
+===DONE===
diff --git a/ext/standard/tests/strings/bin2hex_variation1.phpt b/ext/standard/tests/strings/bin2hex_variation1.phpt
new file mode 100644
index 0000000000..970eff1e22
--- /dev/null
+++ b/ext/standard/tests/strings/bin2hex_variation1.phpt
@@ -0,0 +1,128 @@
+--TEST--
+Test bin2hex() function : usage variations - test values for $str argument
+--FILE--
+<?php
+
+/* Prototype  : string bin2hex  ( string $str  )
+ * Description: Convert binary data into hexadecimal representation
+ * Source code: ext/standard/string.c
+*/
+
+echo "*** Testing bin2hex() function: with unexpected inputs for 'str' argument ***\n";
+
+//get an unset variable
+$unset_var = 'string_val';
+unset($unset_var);
+
+//defining a class
+class sample  {
+  public function __toString() {
+    return "sample object";
+  } 
+}
+
+//getting the resource
+$file_handle = fopen(__FILE__, "r");
+
+// array with different values for $input
+$inputs =  array (
+
+	  // integer values
+/*1*/ 0,
+	  1,
+	  123456,
+	
+	  // float values
+/*4*/ 10.5,
+	  -20.5,
+	  10.1234567e10,
+	
+	  // array values
+/*7*/ array(),
+	  array(0),
+	  array(1, 2),
+	
+	  // boolean values
+/*10*/true,
+	  false,
+	  TRUE,
+	  FALSE,
+	
+	  // null values
+/*14*/NULL,
+	  null,
+	
+	  // objects
+/*16*/new sample(),
+	
+	  // resource
+/*17*/$file_handle,
+	
+	  // undefined variable
+/*18*/@$undefined_var,
+	
+	  // unset variable
+/*19*/@$unset_var
+);
+
+// loop through with each element of the $inputs array to test bin2hex() function
+$count = 1;
+foreach($inputs as $input) {
+  echo "-- Iteration $count --\n";
+  var_dump(bin2hex($input) );
+  $count ++;
+}
+
+fclose($file_handle);  //closing the file handle
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing bin2hex() function: with unexpected inputs for 'str' argument ***
+-- Iteration 1 --
+unicode(2) "30"
+-- Iteration 2 --
+unicode(2) "31"
+-- Iteration 3 --
+unicode(12) "313233343536"
+-- Iteration 4 --
+unicode(8) "31302e35"
+-- Iteration 5 --
+unicode(10) "2d32302e35"
+-- Iteration 6 --
+unicode(24) "313031323334353637303030"
+-- Iteration 7 --
+
+Warning: bin2hex() expects parameter 1 to be binary string, array given in %s on line %d
+NULL
+-- Iteration 8 --
+
+Warning: bin2hex() expects parameter 1 to be binary string, array given in %s on line %d
+NULL
+-- Iteration 9 --
+
+Warning: bin2hex() expects parameter 1 to be binary string, array given in %s on line %d
+NULL
+-- Iteration 10 --
+unicode(2) "31"
+-- Iteration 11 --
+unicode(0) ""
+-- Iteration 12 --
+unicode(2) "31"
+-- Iteration 13 --
+unicode(0) ""
+-- Iteration 14 --
+unicode(0) ""
+-- Iteration 15 --
+unicode(0) ""
+-- Iteration 16 --
+unicode(26) "73616d706c65206f626a656374"
+-- Iteration 17 --
+
+Warning: bin2hex() expects parameter 1 to be binary string, resource given in %s on line %d
+NULL
+-- Iteration 18 --
+unicode(0) ""
+-- Iteration 19 --
+unicode(0) ""
+===DONE===
diff --git a/ext/standard/tests/strings/bug37262.phpt b/ext/standard/tests/strings/bug37262.phpt
index c231587cd8..5a9f7f724d 100644
--- a/ext/standard/tests/strings/bug37262.phpt
+++ b/ext/standard/tests/strings/bug37262.phpt
@@ -5,5 +5,5 @@ Bug #37262 (var_export() does not escape \0 character)
 $func = create_function('$a', 'return $a;');
 var_export($func);
 ?>
---EXPECT--
-'' . "\0" . 'lambda_1'
+--EXPECTF--	
+'' . "\0" . 'lambda_%d'
diff --git a/ext/standard/tests/strings/bug45166.phpt b/ext/standard/tests/strings/bug45166.phpt
new file mode 100644
index 0000000000..223cc0b4dc
--- /dev/null
+++ b/ext/standard/tests/strings/bug45166.phpt
@@ -0,0 +1,10 @@
+--TEST--
+Bug #45166 (substr() )
+--FILE--
+<?php
+	echo substr('cd', -3) . "\n";  
+?>
+===DONE===
+--EXPECT--
+cd
+===DONE===
diff --git a/ext/standard/tests/strings/chr_basic.phpt b/ext/standard/tests/strings/chr_basic.phpt
new file mode 100644
index 0000000000..600d18b516
--- /dev/null
+++ b/ext/standard/tests/strings/chr_basic.phpt
@@ -0,0 +1,27 @@
+--TEST--
+Test chr() function : basic functionality 
+--FILE--
+<?php
+
+/* Prototype  : string chr  ( int $ascii  )
+ * Description: Return a specific character
+ * Source code: ext/standard/string.c
+*/
+
+echo "*** Testing chr() : basic functionality ***\n";
+
+echo chr(72);
+echo chr(101);
+echo chr(108);
+echo chr(108);
+echo chr(111);
+echo chr(10);
+echo "World";
+echo "\n";
+?>
+===DONE===
+--EXPECTF--
+*** Testing chr() : basic functionality ***
+Hello
+World
+===DONE===
diff --git a/ext/standard/tests/strings/chr_error.phpt b/ext/standard/tests/strings/chr_error.phpt
new file mode 100644
index 0000000000..c0dcae7c4c
--- /dev/null
+++ b/ext/standard/tests/strings/chr_error.phpt
@@ -0,0 +1,34 @@
+--TEST--
+Test chr() function : error conditions
+--FILE--
+<?php
+
+/* Prototype  : string chr  ( int $ascii  )
+ * Description: Return a specific character
+ * Source code: ext/standard/string.c
+*/
+
+echo "*** Testing chr() : error conditions ***\n";
+
+echo "\n-- Testing chr() function with no arguments --\n";
+var_dump( chr() );
+
+echo "\n-- Testing chr() function with more than expected no. of arguments --\n";
+$extra_arg = 10;
+var_dump( chr(72, $extra_arg) );
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing chr() : error conditions ***
+
+-- Testing chr() function with no arguments --
+
+Warning: chr() expects exactly 1 parameter, 0 given in %s on line %d
+NULL
+
+-- Testing chr() function with more than expected no. of arguments --
+
+Warning: chr() expects exactly 1 parameter, 2 given in %s on line %d
+NULL
+===DONE===
diff --git a/ext/standard/tests/strings/chr_variation1.phpt b/ext/standard/tests/strings/chr_variation1.phpt
new file mode 100644
index 0000000000..cb090b5b2d
--- /dev/null
+++ b/ext/standard/tests/strings/chr_variation1.phpt
@@ -0,0 +1,135 @@
+--TEST--
+Test chr() function : usage variations - test values for $ascii argument
+--FILE--
+<?php
+
+/* Prototype  : string chr  ( int $ascii  )
+ * Description: Return a specific character
+ * Source code: ext/standard/string.c
+*/
+
+echo "*** Testing chr() function: with unexpected inputs for 'ascii' argument ***\n";
+
+//get an unset variable
+$unset_var = 'string_val';
+unset($unset_var);
+
+//defining a class
+class sample  {
+  public function __toString() {
+    return "sample object";
+  } 
+}
+
+//getting the resource
+$file_handle = fopen(__FILE__, "r");
+
+// array with different values for $input
+$inputs =  array (
+
+		  // integer values
+/*1*/	  0,
+		  1,
+		  255,
+		  256,
+		
+		  // float values
+/*5*/	  10.5,
+		  -20.5,
+		  1.1234e6,
+		
+		  // array values
+/*8*/	  array(),
+		  array(0),
+		  array(1, 2),
+		
+		  // boolean values
+/*11*/	  true,
+		  false,
+		  TRUE,
+		  FALSE,
+		
+		  // null values
+/*15*/	  NULL,
+		  null,
+		
+		  // objects
+/*17*/	  new sample(),
+		
+		  // resource
+/*18*/	  $file_handle,
+		
+		  // undefined variable
+/*19*/	  @$undefined_var,
+		
+		  // unset variable
+/*20*/	  @$unset_var
+);
+
+// loop through with each element of the $inputs array to test chr() function
+$count = 1;
+foreach($inputs as $input) {
+  echo "-- Iteration $count --\n";
+  var_dump( bin2hex((binary)chr($input)) );
+  $count ++;
+}
+
+fclose($file_handle);  //closing the file handle
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing chr() function: with unexpected inputs for 'ascii' argument ***
+-- Iteration 1 --
+unicode(2) "00"
+-- Iteration 2 --
+unicode(2) "01"
+-- Iteration 3 --
+unicode(2) "ff"
+-- Iteration 4 --
+unicode(2) "3f"
+-- Iteration 5 --
+unicode(2) "0a"
+-- Iteration 6 --
+unicode(4) "3f3f"
+-- Iteration 7 --
+
+Warning: Codepoint value cannot be greater than 10FFFF in %s on line %d
+unicode(0) ""
+-- Iteration 8 --
+
+Warning: chr() expects parameter 1 to be long, array given in %s on line %d
+unicode(0) ""
+-- Iteration 9 --
+
+Warning: chr() expects parameter 1 to be long, array given in %s on line %d
+unicode(0) ""
+-- Iteration 10 --
+
+Warning: chr() expects parameter 1 to be long, array given in %s on line %d
+unicode(0) ""
+-- Iteration 11 --
+unicode(2) "01"
+-- Iteration 12 --
+unicode(2) "00"
+-- Iteration 13 --
+unicode(2) "01"
+-- Iteration 14 --
+unicode(2) "00"
+-- Iteration 15 --
+unicode(2) "00"
+-- Iteration 16 --
+unicode(2) "00"
+-- Iteration 17 --
+
+Warning: chr() expects parameter 1 to be long, object given in %s on line %d
+unicode(0) ""
+-- Iteration 18 --
+
+Warning: chr() expects parameter 1 to be long, resource given in %s on line %d
+unicode(0) ""
+-- Iteration 19 --
+unicode(2) "00"
+-- Iteration 20 --
+unicode(2) "00"
+===DONE===
diff --git a/ext/standard/tests/strings/convert_cyr_string_basic.phpt b/ext/standard/tests/strings/convert_cyr_string_basic.phpt
new file mode 100644
index 0000000000..139361d33f
--- /dev/null
+++ b/ext/standard/tests/strings/convert_cyr_string_basic.phpt
@@ -0,0 +1,54 @@
+--TEST--
+Test convert_cyr_string() function : basic functionality 
+--FILE--
+<?php
+
+/* Prototype  : string convert_cyr_string  ( string $str  , string $from  , string $to  )
+ * Description: Convert from one Cyrillic character set to another
+ * Source code: ext/standard/string.c
+*/
+
+echo "*** Testing convert_cyr_string() : basic functionality ***\n";
+
+$str = b"Convert from one Cyrillic character set to another.";
+
+echo "\n-- First try some simple English text --\n";
+var_dump(bin2hex(convert_cyr_string($str, 'w', 'k')));
+var_dump(bin2hex(convert_cyr_string($str, 'w', 'i')));
+
+
+echo "\n-- Now try some of characters in 128-255 range --\n";
+
+$i = 128;
+echo "$i: \n"; 
+echo bin2hex(convert_cyr_string(chr($i), 'w', 'k')) . "\n";
+$i = 200;
+echo "$i: \n"; 
+echo bin2hex(convert_cyr_string(chr($i), 'w', 'k')) . "\n";
+$i = 255;
+echo "$i: \n"; 
+echo bin2hex(convert_cyr_string(chr($i), 'w', 'k')) . "\n";
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing convert_cyr_string() : basic functionality ***
+
+-- First try some simple English text --
+unicode(102) "436f6e766572742066726f6d206f6e6520437972696c6c6963206368617261637465722073657420746f20616e6f746865722e"
+unicode(102) "436f6e766572742066726f6d206f6e6520437972696c6c6963206368617261637465722073657420746f20616e6f746865722e"
+
+-- Now try some of characters in 128-255 range --
+128: 
+
+Warning: convert_cyr_string() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+
+200: 
+
+Warning: convert_cyr_string() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+
+255: 
+
+Warning: convert_cyr_string() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+
+===DONE===
diff --git a/ext/standard/tests/strings/convert_cyr_string_error.phpt b/ext/standard/tests/strings/convert_cyr_string_error.phpt
new file mode 100644
index 0000000000..23e59d8121
--- /dev/null
+++ b/ext/standard/tests/strings/convert_cyr_string_error.phpt
@@ -0,0 +1,73 @@
+--TEST--
+Test convert_cyr_string() function : error conditions 
+--FILE--
+<?php
+
+/* Prototype  : string convert_cyr_string  ( string $str  , string $from  , string $to  )
+ * Description: Convert from one Cyrillic character set to another
+ * Source code: ext/standard/string.c
+*/
+
+$str = b"hello";
+$from = "k";
+$to = "d";
+$extra_arg = 10;
+
+echo "*** Testing convert_cyr_string() : error conditions ***\n";
+
+echo "\n-- Testing convert_cyr_string() function with no arguments --\n";
+var_dump( convert_cyr_string() );
+
+echo "\n-- Testing convert_cyr_string() function with no 'to' character set --\n";
+var_dump( convert_cyr_string($str, $from) );
+
+echo "\n-- Testing convert_cyr_string() function with more than expected no. of arguments --\n";
+var_dump( convert_cyr_string($str, $from, $to, $extra_arg) );
+
+echo "\n-- Testing convert_cyr_string() function with invalid 'from' character set --\n";
+var_dump(bin2hex( convert_cyr_string($str, "?", $to) ));
+
+echo "\n-- Testing convert_cyr_string() function with invalid 'to' character set --\n";
+var_dump(bin2hex( convert_cyr_string($str, $from, "?")) );
+
+echo "\n-- Testing convert_cyr_string() function with invalid 'from' and 'to' character set --\n";
+var_dump(bin2hex( convert_cyr_string($str, ">", "?")) );
+
+?> 
+===DONE===
+--EXPECTF--
+*** Testing convert_cyr_string() : error conditions ***
+
+-- Testing convert_cyr_string() function with no arguments --
+
+Warning: convert_cyr_string() expects exactly 3 parameters, 0 given in %s on line %d
+NULL
+
+-- Testing convert_cyr_string() function with no 'to' character set --
+
+Warning: convert_cyr_string() expects exactly 3 parameters, 2 given in %s on line %d
+NULL
+
+-- Testing convert_cyr_string() function with more than expected no. of arguments --
+
+Warning: convert_cyr_string() expects exactly 3 parameters, 4 given in %s on line %d
+NULL
+
+-- Testing convert_cyr_string() function with invalid 'from' character set --
+
+Warning: convert_cyr_string(): Unknown source charset: ? in %s on line %d
+unicode(10) "68656c6c6f"
+
+-- Testing convert_cyr_string() function with invalid 'to' character set --
+
+Warning: convert_cyr_string(): Unknown destination charset: ? in %s on line %d
+unicode(10) "68656c6c6f"
+
+-- Testing convert_cyr_string() function with invalid 'from' and 'to' character set --
+
+Warning: convert_cyr_string(): Unknown source charset: > in %s on line %d
+
+Warning: convert_cyr_string(): Unknown destination charset: ? in %s on line %d
+unicode(10) "68656c6c6f"
+ 
+===DONE===
diff --git a/ext/standard/tests/strings/convert_cyr_string_variation1.phpt b/ext/standard/tests/strings/convert_cyr_string_variation1.phpt
new file mode 100644
index 0000000000..471acb2ac6
--- /dev/null
+++ b/ext/standard/tests/strings/convert_cyr_string_variation1.phpt
@@ -0,0 +1,139 @@
+--TEST--
+Test convert_cyr_string() function : usage variations - test values for $str argument
+--FILE--
+<?php
+
+/* Prototype  : string convert_cyr_string  ( string $str  , string $from  , string $to  )
+ * Description: Convert from one Cyrillic character set to another
+ * Source code: ext/standard/string.c
+*/
+
+echo "*** Testing convert_cyr_string() function: with unexpected inputs for 'str' argument ***\n";
+
+//get an unset variable
+$unset_var = 'string_val';
+unset($unset_var);
+
+//defining a class
+class sample  {
+  public function __toString() {
+    return "sample object";
+  } 
+}
+
+//getting the resource
+$file_handle = fopen(__FILE__, "r");
+
+// array with different values for $str
+$inputs =  array (
+
+		  // integer values
+/*1*/	  0,
+		  1,
+		  255,
+		  256,
+		  2147483647,
+		  -2147483648,
+		
+		  // float values
+/*7*/	  10.5,
+		  -20.5,
+		  10.1234567e10,
+		
+		  // array values
+/*10*/	  array(),
+		  array(0),
+		  array(1, 2),
+		
+		  // boolean values
+/*13*/	  true,
+		  false,
+		  TRUE,
+		  FALSE,
+		
+		  // null values
+/*17*/	  NULL,
+		  null,
+		
+		  // objects
+/*19*/	  new sample(),
+		
+		  // resource
+/*20*/	  $file_handle,
+		
+		  // undefined variable
+/*21*/	  @$undefined_var,
+		
+		  // unset variable
+/*22*/	  @$unset_var
+);
+
+// loop through with each element of the $inputs array to test convert_cyr_string() function
+$count = 1;
+$from = "w";
+$to = "k";
+foreach($inputs as $input) {
+  echo "-- Iteration $count --\n";
+  var_dump( convert_cyr_string($input, $from, $to) );
+  $count ++;
+}
+
+fclose($file_handle);  //closing the file handle
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing convert_cyr_string() function: with unexpected inputs for 'str' argument ***
+-- Iteration 1 --
+string(1) "0"
+-- Iteration 2 --
+string(1) "1"
+-- Iteration 3 --
+string(3) "255"
+-- Iteration 4 --
+string(3) "256"
+-- Iteration 5 --
+string(10) "2147483647"
+-- Iteration 6 --
+string(11) "-2147483648"
+-- Iteration 7 --
+string(4) "10.5"
+-- Iteration 8 --
+string(5) "-20.5"
+-- Iteration 9 --
+string(12) "101234567000"
+-- Iteration 10 --
+
+Warning: convert_cyr_string() expects parameter 1 to be binary string, array given in %s on line %d
+NULL
+-- Iteration 11 --
+
+Warning: convert_cyr_string() expects parameter 1 to be binary string, array given in %s on line %d
+NULL
+-- Iteration 12 --
+
+Warning: convert_cyr_string() expects parameter 1 to be binary string, array given in %s on line %d
+NULL
+-- Iteration 13 --
+string(1) "1"
+-- Iteration 14 --
+string(0) ""
+-- Iteration 15 --
+string(1) "1"
+-- Iteration 16 --
+string(0) ""
+-- Iteration 17 --
+string(0) ""
+-- Iteration 18 --
+string(0) ""
+-- Iteration 19 --
+string(13) "sample object"
+-- Iteration 20 --
+
+Warning: convert_cyr_string() expects parameter 1 to be binary string, resource given in %s on line %d
+NULL
+-- Iteration 21 --
+string(0) ""
+-- Iteration 22 --
+string(0) ""
+===DONE===
diff --git a/ext/standard/tests/strings/convert_uudecode_basic.phpt b/ext/standard/tests/strings/convert_uudecode_basic.phpt
new file mode 100644
index 0000000000..8f8afb6e10
--- /dev/null
+++ b/ext/standard/tests/strings/convert_uudecode_basic.phpt
@@ -0,0 +1,54 @@
+--TEST--
+Test convert_uudecode() function : basic functionality 
+--FILE--
+<?php
+
+/* Prototype  : string convert_uudecode  ( string $data  )
+ * Description: Decode a uuencoded string
+ * Source code: ext/standard/uuencode.c
+*/
+
+echo "*** Testing convert_uudecode() : basic functionality ***\n";
+
+// array with different values for $string
+$strings =  array (
+
+  //double quoted strings
+  b"123",
+  b"abc",
+  b"1a2b3c",
+  b"Here is a simple string to test convert_uuencode/decode",
+  b"\t This String contains \t\t some control characters\r\n",
+  b"\x90\x91\x00\x93\x94\x90\x91\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f",
+  
+   //single quoted strings
+  b'123',
+  b'abc',
+  b'1a2b3c',
+  b'\t This String contains \t\t some control characters\r\n',
+  
+);  
+
+// loop through with each element of the $strings array to test convert_uudecode() function
+$count = 1;
+foreach($strings as $string) {
+  	
+  $encode = convert_uuencode($string);
+  $decode = convert_uudecode($encode);
+  
+  if ($decode != $string) { 
+  	var_dump($encode, $decode, $string);  
+  	exit("TEST FAILED on iteration $count\n");
+  } 	
+  
+  $count ++;
+}
+
+echo "TEST PASSED\n";
+
+?>
+===DONE=== 
+--EXPECTF--
+*** Testing convert_uudecode() : basic functionality ***
+TEST PASSED
+===DONE===
diff --git a/ext/standard/tests/strings/convert_uudecode_error.phpt b/ext/standard/tests/strings/convert_uudecode_error.phpt
new file mode 100644
index 0000000000..77d3a88833
--- /dev/null
+++ b/ext/standard/tests/strings/convert_uudecode_error.phpt
@@ -0,0 +1,35 @@
+--TEST--
+Test convert_uudecode() function : error conditions 
+--FILE--
+<?php
+
+/* Prototype  : string convert_uudecode  ( string $data  )
+ * Description: Decode a uuencoded string
+ * Source code: ext/standard/uuencode.c
+*/
+
+echo "*** Testing convert_uudecode() : error conditions ***\n";
+
+echo "\n-- Testing convert_uudecode() function with no arguments --\n";
+var_dump( convert_uudecode() );
+
+echo "\n-- Testing convert_uudecode() function with more than expected no. of arguments --\n";
+$extra_arg = 10;
+var_dump( convert_uudecode(72, $extra_arg) );
+
+?> 
+===DONE===
+--EXPECTF--
+*** Testing convert_uudecode() : error conditions ***
+
+-- Testing convert_uudecode() function with no arguments --
+
+Warning: convert_uudecode() expects exactly 1 parameter, 0 given in %s on line %d
+bool(false)
+
+-- Testing convert_uudecode() function with more than expected no. of arguments --
+
+Warning: convert_uudecode() expects exactly 1 parameter, 2 given in %s on line %d
+bool(false)
+ 
+===DONE===
diff --git a/ext/standard/tests/strings/convert_uudecode_variation1.phpt b/ext/standard/tests/strings/convert_uudecode_variation1.phpt
new file mode 100644
index 0000000000..ed9cafacea
--- /dev/null
+++ b/ext/standard/tests/strings/convert_uudecode_variation1.phpt
@@ -0,0 +1,161 @@
+--TEST--
+Test convert_uudecode() function : usage variations - test values for $data argument
+--FILE--
+<?php
+
+/* Prototype  : string convert_uudecode  ( string $data  )
+ * Description: Decode a uuencoded string
+ * Source code: ext/standard/uuencode.c
+*/
+
+echo "*** Testing convert_uudecode() function: with unexpected inputs for 'data' argument ***\n";
+
+//get an unset variable
+$unset_var = 'string_val';
+unset($unset_var);
+
+//defining a class
+class sample  {
+  public function __toString() {
+    return "sample object";
+  } 
+}
+
+//getting the resource
+$file_handle = fopen(__FILE__, "r");
+
+// array with different values for $data
+$inputs =  array (
+
+		  // integer values
+/*1*/	  0,
+		  1,
+		  255,
+		  256,
+	  	  2147483647,
+		  -2147483648,
+		
+		  // float values
+/*7*/	  10.5,
+		  -20.5,
+		  10.1234567e10,
+		
+		  // array values
+/*10*/	  array(),
+		  array(0),
+		  array(1, 2),
+		
+		  // boolean values
+/*13*/	  true,
+		  false,
+		  TRUE,
+		  FALSE,
+		
+		  // null values
+/*17*/	  NULL,
+		  null,
+		
+		  // objects
+/*19*/	  new sample(),
+		
+		  // resource
+/*20*/	  $file_handle,
+		
+		  // undefined variable
+/*21*/	  @$undefined_var,
+		
+		  // unset variable
+/*22*/	  @$unset_var
+);
+
+// loop through with each element of the $data array to test convert_uudecode() function
+$count = 1;
+foreach($inputs as $input) {
+  echo "-- Iteration $count --\n";
+  var_dump( convert_uudecode($input) );
+  $count ++;
+}
+
+fclose($file_handle);  //closing the file handle
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing convert_uudecode() function: with unexpected inputs for 'data' argument ***
+-- Iteration 1 --
+
+Warning: convert_uudecode(): The given parameter is not a valid uuencoded string in %s on line %d
+bool(false)
+-- Iteration 2 --
+
+Warning: convert_uudecode(): The given parameter is not a valid uuencoded string in %s on line %d
+bool(false)
+-- Iteration 3 --
+
+Warning: convert_uudecode(): The given parameter is not a valid uuencoded string in %s on line %d
+bool(false)
+-- Iteration 4 --
+
+Warning: convert_uudecode(): The given parameter is not a valid uuencoded string in %s on line %d
+bool(false)
+-- Iteration 5 --
+
+Warning: convert_uudecode(): The given parameter is not a valid uuencoded string in %s on line %d
+bool(false)
+-- Iteration 6 --
+
+Warning: convert_uudecode(): The given parameter is not a valid uuencoded string in %s on line %d
+bool(false)
+-- Iteration 7 --
+
+Warning: convert_uudecode(): The given parameter is not a valid uuencoded string in %s on line %d
+bool(false)
+-- Iteration 8 --
+
+Warning: convert_uudecode(): The given parameter is not a valid uuencoded string in %s
+bool(false)
+-- Iteration 9 --
+
+Warning: convert_uudecode(): The given parameter is not a valid uuencoded string in %s
+bool(false)
+-- Iteration 10 --
+
+Warning: convert_uudecode() expects parameter 1 to be string (Unicode or binary), array given in %s
+bool(false)
+-- Iteration 11 --
+
+Warning: convert_uudecode() expects parameter 1 to be string (Unicode or binary), array given in %s
+bool(false)
+-- Iteration 12 --
+
+Warning: convert_uudecode() expects parameter 1 to be string (Unicode or binary), array given in %s
+bool(false)
+-- Iteration 13 --
+
+Warning: convert_uudecode(): The given parameter is not a valid uuencoded string in %s
+bool(false)
+-- Iteration 14 --
+bool(false)
+-- Iteration 15 --
+
+Warning: convert_uudecode(): The given parameter is not a valid uuencoded string in %s
+bool(false)
+-- Iteration 16 --
+bool(false)
+-- Iteration 17 --
+bool(false)
+-- Iteration 18 --
+bool(false)
+-- Iteration 19 --
+
+Warning: convert_uudecode(): The given parameter is not a valid uuencoded string in %s
+bool(false)
+-- Iteration 20 --
+
+Warning: convert_uudecode() expects parameter 1 to be string (Unicode or binary), resource given in %s
+bool(false)
+-- Iteration 21 --
+bool(false)
+-- Iteration 22 --
+bool(false)
+===DONE===
\ No newline at end of file
diff --git a/ext/standard/tests/strings/convert_uuencode_basic.phpt b/ext/standard/tests/strings/convert_uuencode_basic.phpt
new file mode 100644
index 0000000000..fd17f18013
--- /dev/null
+++ b/ext/standard/tests/strings/convert_uuencode_basic.phpt
@@ -0,0 +1,88 @@
+--TEST--
+Test convert_uuencode() function : basic functionality 
+--FILE--
+<?php
+
+/* Prototype  : string convert_uuencode  ( string $data  )
+ * Description: Uuencode a string
+ * Source code: ext/standard/uuencode.c
+*/
+
+echo "*** Testing convert_uuencode() : basic functionality ***\n";
+
+// array with different values for $string
+$strings =  array (
+
+  //double quoted strings
+  b"123",
+  b"abc",
+  b"1a2b3c",
+  b"Here is a simple string to test convert_uuencode/decode",
+  b"\t This String contains \t\t some control characters\r\n",
+  b"\x90\x91\x00\x93\x94\x90\x91\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f",
+  
+   //single quoted strings
+  b'123',
+  b'abc',
+  b'1a2b3c',
+  b'\t This String contains \t\t some control characters\r\n',
+  
+);  
+
+// loop through with each element of the $strings array to test convert_uuencode() function
+$count = 1;
+foreach($strings as $string) {
+  echo "-- Iteration $count --\n";
+  var_dump( convert_uuencode($string) );
+  $count ++;
+}
+
+
+?>
+===DONE=== 
+--EXPECTF--
+*** Testing convert_uuencode() : basic functionality ***
+-- Iteration 1 --
+unicode(8) "#,3(S
+`
+"
+-- Iteration 2 --
+unicode(8) "#86)C
+`
+"
+-- Iteration 3 --
+unicode(12) "&,6$R8C-C
+`
+"
+-- Iteration 4 --
+unicode(82) "M2&5R92!I<R!A('-I;7!L92!S=')I;F<@=&\@=&5S="!C;VYV97)T7W5U96YC
+*;V1E+V1E8V]D90``
+`
+"
+-- Iteration 5 --
+unicode(74) "M"2!4:&ES(%-T<FEN9R!C;VYT86EN<R`)"2!S;VUE(&-O;G1R;VP@8VAA<F%C
+&=&5R<PT*
+`
+"
+-- Iteration 6 --
+unicode(28) "2D)$`DY20D966EYB9FIN<G9Z?
+`
+"
+-- Iteration 7 --
+unicode(8) "#,3(S
+`
+"
+-- Iteration 8 --
+unicode(8) "#86)C
+`
+"
+-- Iteration 9 --
+unicode(12) "&,6$R8C-C
+`
+"
+-- Iteration 10 --
+unicode(82) "M7'0@5&AI<R!3=')I;F<@8V]N=&%I;G,@7'1<="!S;VUE(&-O;G1R;VP@8VAA
++<F%C=&5R<UQR7&X`
+`
+"
+===DONE===
diff --git a/ext/standard/tests/strings/convert_uuencode_error.phpt b/ext/standard/tests/strings/convert_uuencode_error.phpt
new file mode 100644
index 0000000000..a995e18fe2
--- /dev/null
+++ b/ext/standard/tests/strings/convert_uuencode_error.phpt
@@ -0,0 +1,35 @@
+--TEST--
+Test convert_uuencode() function : error conditions 
+--FILE--
+<?php
+
+/* Prototype  : string convert_uuencode  ( string $data  )
+ * Description: Uuencode a string
+ * Source code: ext/standard/uuencode.c
+*/
+
+echo "*** Testing convert_uuencode() : error conditions ***\n";
+
+echo "\n-- Testing chconvert_uuencoder() function with no arguments --\n";
+var_dump( convert_uuencode() );
+
+echo "\n-- Testing convert_uuencode() function with more than expected no. of arguments --\n";
+$extra_arg = 10;
+var_dump( convert_uuencode(72, $extra_arg) );
+
+?> 
+===DONE===
+--EXPECTF--
+*** Testing convert_uuencode() : error conditions ***
+
+-- Testing chconvert_uuencoder() function with no arguments --
+
+Warning: convert_uuencode() expects exactly 1 parameter, 0 given in %s on line %d
+bool(false)
+
+-- Testing convert_uuencode() function with more than expected no. of arguments --
+
+Warning: convert_uuencode() expects exactly 1 parameter, 2 given in %s on line %d
+bool(false)
+ 
+===DONE===
diff --git a/ext/standard/tests/strings/convert_uuencode_variation1.phpt b/ext/standard/tests/strings/convert_uuencode_variation1.phpt
new file mode 100644
index 0000000000..4b90fd5eda
--- /dev/null
+++ b/ext/standard/tests/strings/convert_uuencode_variation1.phpt
@@ -0,0 +1,161 @@
+--TEST--
+Test convert_uuencode() function : usage variations - test values for $data argument
+--FILE--
+<?php
+
+/* Prototype  : string convert_uuencode  ( string $data  )
+ * Description: Uuencode a string
+ * Source code: ext/standard/uuencode.c
+*/
+
+echo "*** Testing convert_uuencode() function: with unexpected inputs for 'data' argument ***\n";
+
+//get an unset variable
+$unset_var = 'string_val';
+unset($unset_var);
+
+//defining a class
+class sample  {
+  public function __toString() {
+    return "sample object";
+  } 
+}
+
+//getting the resource
+$file_handle = fopen(__FILE__, "r");
+
+// array with different values for $data
+$inputs =  array (
+
+		  // integer values
+/*1*/	  0,
+		  1,
+		  255,
+		  256,
+	      2147483647,
+		  -2147483648,
+		
+		  // float values
+/*7*/	  10.5,
+		  -20.5,
+		  10.1234567e10,
+		
+		  // array values
+/*10*/	  array(),
+		  array(0),
+		  array(1, 2),
+		
+		  // boolean values
+/*13*/	  true,
+		  false,
+		  TRUE,
+		  FALSE,
+		
+		  // null values
+/*17*/	  NULL,
+		  null,
+		
+		  // objects
+/*19*/	  new sample(),
+		
+		  // resource
+/*20*/	  $file_handle,
+		
+		  // undefined variable
+/*21*/	  @$undefined_var,
+		
+		  // unset variable
+/*22*/	  @$unset_var
+);
+
+// loop through with each element of the $data array to test convert_uuencode() function
+$count = 1;
+foreach($inputs as $input) {
+  echo "-- Iteration $count --\n";
+  var_dump( bin2hex(convert_uuencode($input)) );
+  $count ++;
+}
+
+fclose($file_handle);  //closing the file handle
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing convert_uuencode() function: with unexpected inputs for 'data' argument ***
+-- Iteration 1 --
+
+Warning: bin2hex() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+NULL
+-- Iteration 2 --
+
+Warning: bin2hex() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+NULL
+-- Iteration 3 --
+
+Warning: bin2hex() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+NULL
+-- Iteration 4 --
+
+Warning: bin2hex() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+NULL
+-- Iteration 5 --
+
+Warning: bin2hex() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+NULL
+-- Iteration 6 --
+
+Warning: bin2hex() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+NULL
+-- Iteration 7 --
+
+Warning: bin2hex() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+NULL
+-- Iteration 8 --
+
+Warning: bin2hex() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+NULL
+-- Iteration 9 --
+
+Warning: bin2hex() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+NULL
+-- Iteration 10 --
+
+Warning: convert_uuencode() expects parameter 1 to be string (Unicode or binary), array given in %s on line %d
+unicode(0) ""
+-- Iteration 11 --
+
+Warning: convert_uuencode() expects parameter 1 to be string (Unicode or binary), array given in %s on line %d
+unicode(0) ""
+-- Iteration 12 --
+
+Warning: convert_uuencode() expects parameter 1 to be string (Unicode or binary), array given in %s on line %d
+unicode(0) ""
+-- Iteration 13 --
+
+Warning: bin2hex() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+NULL
+-- Iteration 14 --
+unicode(0) ""
+-- Iteration 15 --
+
+Warning: bin2hex() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+NULL
+-- Iteration 16 --
+unicode(0) ""
+-- Iteration 17 --
+unicode(0) ""
+-- Iteration 18 --
+unicode(0) ""
+-- Iteration 19 --
+
+Warning: bin2hex() expects parameter 1 to be strictly a binary string, Unicode string given in %s on line %d
+NULL
+-- Iteration 20 --
+
+Warning: convert_uuencode() expects parameter 1 to be string (Unicode or binary), resource given in %s on line %d
+unicode(0) ""
+-- Iteration 21 --
+unicode(0) ""
+-- Iteration 22 --
+unicode(0) ""
+===DONE===
diff --git a/ext/standard/tests/strings/count_chars_basic.phpt b/ext/standard/tests/strings/count_chars_basic.phpt
new file mode 100644
index 0000000000..1f9fa39301
--- /dev/null
+++ b/ext/standard/tests/strings/count_chars_basic.phpt
@@ -0,0 +1,116 @@
+--TEST--
+Test count_chars() function : basic functionality 
+--FILE--
+<?php
+
+/* Prototype  : mixed count_chars  ( string $string  [, int $mode  ] )
+ * Description: Return information about characters used in a string
+ * Source code: ext/standard/string.c
+*/
+
+
+echo "*** Testing count_chars() : basic functionality ***\n";
+
+$string = "Return information about characters used in a string";
+
+var_dump(count_chars($string));
+var_dump(count_chars($string, 0));
+var_dump(count_chars($string, 1));
+var_dump(count_chars($string, 2));
+var_dump(count_chars($string, 3));
+var_dump(bin2hex(count_chars($string, 4)));
+
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing count_chars() : basic functionality ***
+array(18) {
+  [u"R"]=>
+  int(1)
+  [u"e"]=>
+  int(3)
+  [u"t"]=>
+  int(5)
+  [u"u"]=>
+  int(3)
+  [u"r"]=>
+  int(5)
+  [u"n"]=>
+  int(5)
+  [u" "]=>
+  int(7)
+  [u"i"]=>
+  int(4)
+  [u"f"]=>
+  int(1)
+  [u"o"]=>
+  int(3)
+  [u"m"]=>
+  int(1)
+  [u"a"]=>
+  int(5)
+  [u"b"]=>
+  int(1)
+  [u"c"]=>
+  int(2)
+  [u"h"]=>
+  int(1)
+  [u"s"]=>
+  int(3)
+  [u"d"]=>
+  int(1)
+  [u"g"]=>
+  int(1)
+}
+
+Warning: count_chars(): Only mode=1 is supported with Unicode strings in %s on line %d
+bool(false)
+array(18) {
+  [u"R"]=>
+  int(1)
+  [u"e"]=>
+  int(3)
+  [u"t"]=>
+  int(5)
+  [u"u"]=>
+  int(3)
+  [u"r"]=>
+  int(5)
+  [u"n"]=>
+  int(5)
+  [u" "]=>
+  int(7)
+  [u"i"]=>
+  int(4)
+  [u"f"]=>
+  int(1)
+  [u"o"]=>
+  int(3)
+  [u"m"]=>
+  int(1)
+  [u"a"]=>
+  int(5)
+  [u"b"]=>
+  int(1)
+  [u"c"]=>
+  int(2)
+  [u"h"]=>
+  int(1)
+  [u"s"]=>
+  int(3)
+  [u"d"]=>
+  int(1)
+  [u"g"]=>
+  int(1)
+}
+
+Warning: count_chars(): Only mode=1 is supported with Unicode strings in %s on line %d
+bool(false)
+
+Warning: count_chars(): Only mode=1 is supported with Unicode strings in %s on line %d
+bool(false)
+
+Warning: count_chars(): Only mode=1 is supported with Unicode strings in %s on line %d
+unicode(0) ""
+===DONE===
diff --git a/ext/standard/tests/strings/count_chars_error.phpt b/ext/standard/tests/strings/count_chars_error.phpt
new file mode 100644
index 0000000000..45c1163398
--- /dev/null
+++ b/ext/standard/tests/strings/count_chars_error.phpt
@@ -0,0 +1,36 @@
+--TEST--
+Test count_chars() function : error conditions
+--FILE--
+<?php
+
+/* Prototype  : mixed count_chars  ( string $string  [, int $mode  ] )
+ * Description: Return information about characters used in a string
+ * Source code: ext/standard/string.c
+*/
+
+echo "*** Testing count_chars() : error conditions ***\n";
+
+echo "\n-- Testing count_chars() function with no arguments --\n";
+var_dump( count_chars() );
+
+echo "\n-- Testing count_chars() function with more than expected no. of arguments --\n";
+$string = "Hello World\n"; 
+$mode = 1;
+$extra_arg = 10;
+var_dump( count_chars($string, $mode, $extra_arg) );
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing count_chars() : error conditions ***
+
+-- Testing count_chars() function with no arguments --
+
+Warning: count_chars() expects at least 1 parameter, 0 given in %s on line %d
+NULL
+
+-- Testing count_chars() function with more than expected no. of arguments --
+
+Warning: count_chars() expects at most 2 parameters, 3 given in %s on line %d
+NULL
+===DONE===
diff --git a/ext/standard/tests/strings/count_chars_variation1.phpt b/ext/standard/tests/strings/count_chars_variation1.phpt
new file mode 100644
index 0000000000..e24fc570df
--- /dev/null
+++ b/ext/standard/tests/strings/count_chars_variation1.phpt
@@ -0,0 +1,262 @@
+--TEST--
+Test count_chars() function : usage variations - test values for $string argument
+--FILE--
+<?php
+
+/* Prototype  : mixed count_chars  ( string $string  [, int $mode  ] )
+ * Description: Return information about characters used in a string
+ * Source code: ext/standard/string.c
+*/
+
+echo "*** Testing count_chars() function: with unexpected inputs for 'string' argument ***\n";
+
+//get an unset variable
+$unset_var = 'string_val';
+unset($unset_var);
+
+//defining a class
+class sample  {
+  public function __toString() {
+    return "sample object";
+  } 
+}
+
+//getting the resource
+$file_handle = fopen(__FILE__, "r");
+
+// array with different values for $input
+$inputs =  array (
+
+			  // integer values
+/* 1 */		  0,
+			  1,
+			  255,
+			  256,
+	    	  2147483647,
+		 	 -2147483648,
+			
+			  // float values
+/* 7 */		  10.5,
+			  -20.5,
+			  10.1234567e10,
+			
+			  // array values
+/* 10 */	  array(),
+			  array(0),
+			  array(1, 2),
+			
+			  // boolean values
+/* 13 */	  true,
+			  false,
+			  TRUE,
+			  FALSE,
+			
+			  // null values
+/* 17 */	  NULL,
+			  null,
+			
+			  // objects
+/* 19 */	  new sample(),
+			
+			  // resource
+/* 20 */	  $file_handle,
+			
+			  // undefined variable
+/* 21 */	  @$undefined_var,
+			
+			  // unset variable
+/* 22 */	  @$unset_var
+);
+
+// loop through with each element of the $inputs array to test count_chars() function
+$count = 1;
+foreach($inputs as $input) {
+  echo "-- Iteration $count --\n";
+  // only list characters with a frequency > 0
+  var_dump(count_chars($input, 1));
+  $count ++;
+}
+
+fclose($file_handle);  //closing the file handle
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing count_chars() function: with unexpected inputs for 'string' argument ***
+-- Iteration 1 --
+array(1) {
+  [0]=>
+  int(1)
+}
+-- Iteration 2 --
+array(1) {
+  [1]=>
+  int(1)
+}
+-- Iteration 3 --
+array(2) {
+  [2]=>
+  int(1)
+  [5]=>
+  int(2)
+}
+-- Iteration 4 --
+array(3) {
+  [2]=>
+  int(1)
+  [5]=>
+  int(1)
+  [6]=>
+  int(1)
+}
+-- Iteration 5 --
+array(7) {
+  [2]=>
+  int(1)
+  [1]=>
+  int(1)
+  [4]=>
+  int(3)
+  [7]=>
+  int(2)
+  [8]=>
+  int(1)
+  [3]=>
+  int(1)
+  [6]=>
+  int(1)
+}
+-- Iteration 6 --
+array(8) {
+  [u"-"]=>
+  int(1)
+  [2]=>
+  int(1)
+  [1]=>
+  int(1)
+  [4]=>
+  int(3)
+  [7]=>
+  int(1)
+  [8]=>
+  int(2)
+  [3]=>
+  int(1)
+  [6]=>
+  int(1)
+}
+-- Iteration 7 --
+array(4) {
+  [1]=>
+  int(1)
+  [0]=>
+  int(1)
+  [u"."]=>
+  int(1)
+  [5]=>
+  int(1)
+}
+-- Iteration 8 --
+array(5) {
+  [u"-"]=>
+  int(1)
+  [2]=>
+  int(1)
+  [0]=>
+  int(1)
+  [u"."]=>
+  int(1)
+  [5]=>
+  int(1)
+}
+-- Iteration 9 --
+array(8) {
+  [1]=>
+  int(2)
+  [0]=>
+  int(4)
+  [2]=>
+  int(1)
+  [3]=>
+  int(1)
+  [4]=>
+  int(1)
+  [5]=>
+  int(1)
+  [6]=>
+  int(1)
+  [7]=>
+  int(1)
+}
+-- Iteration 10 --
+
+Warning: count_chars() expects parameter 1 to be string (Unicode or binary), array given in %s on line %d
+NULL
+-- Iteration 11 --
+
+Warning: count_chars() expects parameter 1 to be string (Unicode or binary), array given in %s on line %d
+NULL
+-- Iteration 12 --
+
+Warning: count_chars() expects parameter 1 to be string (Unicode or binary), array given in %s on line %d
+NULL
+-- Iteration 13 --
+array(1) {
+  [1]=>
+  int(1)
+}
+-- Iteration 14 --
+array(0) {
+}
+-- Iteration 15 --
+array(1) {
+  [1]=>
+  int(1)
+}
+-- Iteration 16 --
+array(0) {
+}
+-- Iteration 17 --
+array(0) {
+}
+-- Iteration 18 --
+array(0) {
+}
+-- Iteration 19 --
+array(12) {
+  [u"s"]=>
+  int(1)
+  [u"a"]=>
+  int(1)
+  [u"m"]=>
+  int(1)
+  [u"p"]=>
+  int(1)
+  [u"l"]=>
+  int(1)
+  [u"e"]=>
+  int(2)
+  [u" "]=>
+  int(1)
+  [u"o"]=>
+  int(1)
+  [u"b"]=>
+  int(1)
+  [u"j"]=>
+  int(1)
+  [u"c"]=>
+  int(1)
+  [u"t"]=>
+  int(1)
+}
+-- Iteration 20 --
+
+Warning: count_chars() expects parameter 1 to be string (Unicode or binary), resource given in %s on line %d
+NULL
+-- Iteration 21 --
+array(0) {
+}
+-- Iteration 22 --
+array(0) {
+}
+===DONE===
diff --git a/ext/standard/tests/strings/count_chars_variation2.phpt b/ext/standard/tests/strings/count_chars_variation2.phpt
new file mode 100644
index 0000000000..ee62c5e791
--- /dev/null
+++ b/ext/standard/tests/strings/count_chars_variation2.phpt
@@ -0,0 +1,178 @@
+--TEST--
+Test count_chars() function : usage variations - test values for $mode argument
+--FILE--
+<?php
+
+/* Prototype  : mixed count_chars  ( string $string  [, int $mode  ] )
+ * Description: Return information about characters used in a string
+ * Source code: ext/standard/string.c
+*/
+
+echo "*** Testing count_chars() function: with unexpected inputs for 'mode' argument ***\n";
+
+//get an unset variable
+$unset_var = 'string_val';
+unset($unset_var);
+
+//defining a class
+class sample  {
+}
+
+// array with different values for $input
+$inputs =  array (
+
+			  // integer values
+/* 1 */		  0,
+			  1,
+			  255,
+			  2147483647,
+		      -2147483648,
+			
+			  // float values
+/* 6 */		  0.0,
+			  1.3,
+			  10.5,
+			  -20.5,
+			  10.1234567e10,
+			
+			  // array values
+/* 11 */	  array(),
+			  array(1, 2, 3, 4, 5, 6, 7, 8, 9),
+			
+			  // boolean values
+/* 14 */	  true,
+			  false,
+			  TRUE,
+			  FALSE,
+			
+			  // null values
+/* 18 */	  NULL,
+			  null,
+			  
+			  // string values
+/* 20 */	  "ABCD",
+			  'abcd',
+			  "1ABC",
+			  "5ABC",
+			  
+			  // objects
+/* 24 */ 	  new sample(),
+			
+			   // undefined variable
+/* 25 */	  @$undefined_var,
+			
+			  // unset variable
+/* 26 */	  @$unset_var
+);
+
+// loop through with each element of the $inputs array to test count_chars() function
+// with unexepcted values for the 'mode' argument
+$count = 1;
+$string = "Return information about characters used in a string";
+foreach($inputs as $input) {
+  echo "-- Iteration $count --\n";
+  // only list characters with a frequency > 0
+  var_dump(is_array(count_chars($string, $input)));
+  $count ++;
+}
+
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing count_chars() function: with unexpected inputs for 'mode' argument ***
+-- Iteration 1 --
+
+Warning: count_chars(): Only mode=1 is supported with Unicode strings in %s on line %d
+bool(false)
+-- Iteration 2 --
+bool(true)
+-- Iteration 3 --
+
+Warning: count_chars(): Unknown mode in %s on line %d
+bool(false)
+-- Iteration 4 --
+
+Warning: count_chars(): Unknown mode in %s on line %d
+bool(false)
+-- Iteration 5 --
+
+Warning: count_chars(): Unknown mode in %s on line %d
+bool(false)
+-- Iteration 6 --
+
+Warning: count_chars(): Only mode=1 is supported with Unicode strings in %s on line %d
+bool(false)
+-- Iteration 7 --
+bool(true)
+-- Iteration 8 --
+
+Warning: count_chars(): Unknown mode in %s on line %d
+bool(false)
+-- Iteration 9 --
+
+Warning: count_chars(): Unknown mode in %s on line %d
+bool(false)
+-- Iteration 10 --
+
+Warning: count_chars(): Unknown mode in %s on line %d
+bool(false)
+-- Iteration 11 --
+
+Warning: count_chars() expects parameter 2 to be long, array given in %s on line %d
+bool(false)
+-- Iteration 12 --
+
+Warning: count_chars() expects parameter 2 to be long, array given in %s on line %d
+bool(false)
+-- Iteration 13 --
+bool(true)
+-- Iteration 14 --
+
+Warning: count_chars(): Only mode=1 is supported with Unicode strings in %s on line %d
+bool(false)
+-- Iteration 15 --
+bool(true)
+-- Iteration 16 --
+
+Warning: count_chars(): Only mode=1 is supported with Unicode strings in %s on line %d
+bool(false)
+-- Iteration 17 --
+
+Warning: count_chars(): Only mode=1 is supported with Unicode strings in %s on line %d
+bool(false)
+-- Iteration 18 --
+
+Warning: count_chars(): Only mode=1 is supported with Unicode strings in %s on line %d
+bool(false)
+-- Iteration 19 --
+
+Warning: count_chars() expects parameter 2 to be long, Unicode string given in %s on line %d
+bool(false)
+-- Iteration 20 --
+
+Warning: count_chars() expects parameter 2 to be long, Unicode string given in %s on line %d
+bool(false)
+-- Iteration 21 --
+
+Notice: A non well formed numeric value encountered in %s on line %d
+bool(true)
+-- Iteration 22 --
+
+Notice: A non well formed numeric value encountered in %s on line %d
+
+Warning: count_chars(): Unknown mode in %s on line %d
+bool(false)
+-- Iteration 23 --
+
+Warning: count_chars() expects parameter 2 to be long, object given in %s on line %d
+bool(false)
+-- Iteration 24 --
+
+Warning: count_chars(): Only mode=1 is supported with Unicode strings in %s on line %d
+bool(false)
+-- Iteration 25 --
+
+Warning: count_chars(): Only mode=1 is supported with Unicode strings in %s on line %d
+bool(false)
+===DONE===
-- 
2.50.1