--- /dev/null
+--TEST--
+Test key() function : basic functionality
+--FILE--
+<?php
+/* Prototype : mixed key(array $array_arg)
+ * Description: Return the key of the element currently pointed to by the internal array pointer
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Test basic functionality of key()
+ */
+
+echo "*** Testing key() : basic functionality ***\n";
+
+$array = array ('zero', 99 => 'one', 'two', 'three' => 3);
+echo "\n-- Initial Position: --\n";
+var_dump(key($array));
+
+echo "\n-- Next Position: --\n";
+next($array);
+var_dump(key($array));
+
+echo "\n-- End Position: --\n";
+end($array);
+var_dump(key($array));
+
+echo "\n-- Past end of the array --\n";
+next($array);
+var_dump(key($array));
+?>
+===DONE===
+--EXPECTF--
+*** Testing key() : basic functionality ***
+
+-- Initial Position: --
+int(0)
+
+-- Next Position: --
+int(99)
+
+-- End Position: --
+string(5) "three"
+
+-- Past end of the array --
+NULL
+===DONE===
+--UEXPECTF--
+*** Testing key() : basic functionality ***
+
+-- Initial Position: --
+int(0)
+
+-- Next Position: --
+int(99)
+
+-- End Position: --
+unicode(5) "three"
+
+-- Past end of the array --
+NULL
+===DONE===
--- /dev/null
+--TEST--
+Test key() function : error conditions - Pass incorrect number of args
+--FILE--
+<?php
+/* Prototype : mixed key(array $array_arg)
+ * Description: Return the key of the element currently pointed to by the internal array pointer
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Pass incorrect number of arguments to key() to test behaviour
+ */
+
+echo "*** Testing key() : error conditions ***\n";
+
+// Zero arguments
+echo "\n-- Testing key() function with Zero arguments --\n";
+var_dump( key() );
+
+//Test current with one more than the expected number of arguments
+echo "\n-- Testing key() function with more than expected no. of arguments --\n";
+$array_arg = array(1, 2);
+$extra_arg = 10;
+var_dump( key($array_arg, $extra_arg) );
+?>
+===DONE===
+--EXPECTF--
+*** Testing key() : error conditions ***
+
+-- Testing key() function with Zero arguments --
+
+Warning: key() expects exactly 1 parameter, 0 given in %s on line %d
+NULL
+
+-- Testing key() function with more than expected no. of arguments --
+
+Warning: key() expects exactly 1 parameter, 2 given in %s on line %d
+NULL
+===DONE===
+--UEXPECTF--
+*** Testing key() : error conditions ***
+
+-- Testing key() function with Zero arguments --
+
+Warning: key() expects exactly 1 parameter, 0 given in %s on line %d
+NULL
+
+-- Testing key() function with more than expected no. of arguments --
+
+Warning: key() expects exactly 1 parameter, 2 given in %s on line %d
+NULL
+===DONE===
--- /dev/null
+--TEST--
+Test key() function : usage variations - Pass different data types as $array_arg arg.
+--FILE--
+<?php
+/* Prototype : mixed key(array $array_arg)
+ * Description: Return the key of the element currently pointed to by the internal array pointer
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Pass different data types as $array_arg argument to test behaviour of key()
+ */
+
+echo "*** Testing key() : usage variations ***\n";
+
+//get an unset variable
+$unset_var = 10;
+unset ($unset_var);
+
+// get a class
+class classA
+{
+ var $var1;
+ public function __toString() {
+ return "Class A object";
+ }
+}
+
+// heredoc string
+$heredoc = <<<EOT
+hello world
+EOT;
+
+// get a resource variable
+$fp = fopen(__FILE__, "r");
+
+// unexpected values to be passed to $array_arg argument
+$inputs = array(
+
+ // int data
+/*1*/ 0,
+ 1,
+ 12345,
+ -2345,
+
+ // float data
+/*5*/ 10.5,
+ -10.5,
+ 12.3456789000e10,
+ 12.3456789000E-10,
+ .5,
+
+ // null data
+/*10*/ NULL,
+ null,
+
+ // boolean data
+/*12*/ true,
+ false,
+ TRUE,
+ FALSE,
+
+ // empty data
+/*16*/ "",
+ '',
+ array(),
+
+ // string data
+/*19*/ "string",
+ 'string',
+ $heredoc,
+
+ // object data
+/*22*/ new classA(),
+
+ // undefined data
+/*23*/ @$undefined_var,
+
+ // unset data
+/*24*/ @$unset_var,
+
+ // resource variable
+/*25*/ $fp
+);
+
+// loop through each element of $inputs to check the behavior of key()
+$iterator = 1;
+foreach($inputs as $input) {
+ echo "\n-- Iteration $iterator --\n";
+ var_dump( key($input) );
+ $iterator++;
+};
+
+fclose($fp);
+?>
+===DONE===
+--EXPECTF--
+*** Testing key() : usage variations ***
+
+-- Iteration 1 --
+
+Warning: key() expects parameter 1 to be array, integer given in %s on line %d
+NULL
+
+-- Iteration 2 --
+
+Warning: key() expects parameter 1 to be array, integer given in %s on line %d
+NULL
+
+-- Iteration 3 --
+
+Warning: key() expects parameter 1 to be array, integer given in %s on line %d
+NULL
+
+-- Iteration 4 --
+
+Warning: key() expects parameter 1 to be array, integer given in %s on line %d
+NULL
+
+-- Iteration 5 --
+
+Warning: key() expects parameter 1 to be array, double given in %s on line %d
+NULL
+
+-- Iteration 6 --
+
+Warning: key() expects parameter 1 to be array, double given in %s on line %d
+NULL
+
+-- Iteration 7 --
+
+Warning: key() expects parameter 1 to be array, double given in %s on line %d
+NULL
+
+-- Iteration 8 --
+
+Warning: key() expects parameter 1 to be array, double given in %s on line %d
+NULL
+
+-- Iteration 9 --
+
+Warning: key() expects parameter 1 to be array, double given in %s on line %d
+NULL
+
+-- Iteration 10 --
+
+Warning: key() expects parameter 1 to be array, null given in %s on line %d
+NULL
+
+-- Iteration 11 --
+
+Warning: key() expects parameter 1 to be array, null given in %s on line %d
+NULL
+
+-- Iteration 12 --
+
+Warning: key() expects parameter 1 to be array, boolean given in %s on line %d
+NULL
+
+-- Iteration 13 --
+
+Warning: key() expects parameter 1 to be array, boolean given in %s on line %d
+NULL
+
+-- Iteration 14 --
+
+Warning: key() expects parameter 1 to be array, boolean given in %s on line %d
+NULL
+
+-- Iteration 15 --
+
+Warning: key() expects parameter 1 to be array, boolean given in %s on line %d
+NULL
+
+-- Iteration 16 --
+
+Warning: key() expects parameter 1 to be array, string given in %s on line %d
+NULL
+
+-- Iteration 17 --
+
+Warning: key() expects parameter 1 to be array, string given in %s on line %d
+NULL
+
+-- Iteration 18 --
+NULL
+
+-- Iteration 19 --
+
+Warning: key() expects parameter 1 to be array, string given in %s on line %d
+NULL
+
+-- Iteration 20 --
+
+Warning: key() expects parameter 1 to be array, string given in %s on line %d
+NULL
+
+-- Iteration 21 --
+
+Warning: key() expects parameter 1 to be array, string given in %s on line %d
+NULL
+
+-- Iteration 22 --
+
+Warning: key() expects parameter 1 to be array, object given in %s on line %d
+NULL
+
+-- Iteration 23 --
+
+Warning: key() expects parameter 1 to be array, null given in %s on line %d
+NULL
+
+-- Iteration 24 --
+
+Warning: key() expects parameter 1 to be array, null given in %s on line %d
+NULL
+
+-- Iteration 25 --
+
+Warning: key() expects parameter 1 to be array, resource given in %s on line %d
+NULL
+===DONE===
+--UEXPECTF--
+*** Testing key() : usage variations ***
+
+-- Iteration 1 --
+
+Warning: key() expects parameter 1 to be array, integer given in %s on line %d
+NULL
+
+-- Iteration 2 --
+
+Warning: key() expects parameter 1 to be array, integer given in %s on line %d
+NULL
+
+-- Iteration 3 --
+
+Warning: key() expects parameter 1 to be array, integer given in %s on line %d
+NULL
+
+-- Iteration 4 --
+
+Warning: key() expects parameter 1 to be array, integer given in %s on line %d
+NULL
+
+-- Iteration 5 --
+
+Warning: key() expects parameter 1 to be array, double given in %s on line %d
+NULL
+
+-- Iteration 6 --
+
+Warning: key() expects parameter 1 to be array, double given in %s on line %d
+NULL
+
+-- Iteration 7 --
+
+Warning: key() expects parameter 1 to be array, double given in %s on line %d
+NULL
+
+-- Iteration 8 --
+
+Warning: key() expects parameter 1 to be array, double given in %s on line %d
+NULL
+
+-- Iteration 9 --
+
+Warning: key() expects parameter 1 to be array, double given in %s on line %d
+NULL
+
+-- Iteration 10 --
+
+Warning: key() expects parameter 1 to be array, null given in %s on line %d
+NULL
+
+-- Iteration 11 --
+
+Warning: key() expects parameter 1 to be array, null given in %s on line %d
+NULL
+
+-- Iteration 12 --
+
+Warning: key() expects parameter 1 to be array, boolean given in %s on line %d
+NULL
+
+-- Iteration 13 --
+
+Warning: key() expects parameter 1 to be array, boolean given in %s on line %d
+NULL
+
+-- Iteration 14 --
+
+Warning: key() expects parameter 1 to be array, boolean given in %s on line %d
+NULL
+
+-- Iteration 15 --
+
+Warning: key() expects parameter 1 to be array, boolean given in %s on line %d
+NULL
+
+-- Iteration 16 --
+
+Warning: key() expects parameter 1 to be array, Unicode string given in %s on line %d
+NULL
+
+-- Iteration 17 --
+
+Warning: key() expects parameter 1 to be array, Unicode string given in %s on line %d
+NULL
+
+-- Iteration 18 --
+NULL
+
+-- Iteration 19 --
+
+Warning: key() expects parameter 1 to be array, Unicode string given in %s on line %d
+NULL
+
+-- Iteration 20 --
+
+Warning: key() expects parameter 1 to be array, Unicode string given in %s on line %d
+NULL
+
+-- Iteration 21 --
+
+Warning: key() expects parameter 1 to be array, Unicode string given in %s on line %d
+NULL
+
+-- Iteration 22 --
+
+Warning: key() expects parameter 1 to be array, object given in %s on line %d
+NULL
+
+-- Iteration 23 --
+
+Warning: key() expects parameter 1 to be array, null given in %s on line %d
+NULL
+
+-- Iteration 24 --
+
+Warning: key() expects parameter 1 to be array, null given in %s on line %d
+NULL
+
+-- Iteration 25 --
+
+Warning: key() expects parameter 1 to be array, resource given in %s on line %d
+NULL
+===DONE===
--- /dev/null
+--TEST--
+Test key() function : usage variations
+--FILE--
+<?php
+/* Prototype : mixed key(array $array_arg)
+ * Description: Return the key of the element currently pointed to by the internal array pointer
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Pass arrays where keys are different data types as $array_arg to key() to test behaviour
+ */
+
+echo "*** Testing key() : usage variations ***\n";
+
+//get an unset variable
+$unset_var = 10;
+unset ($unset_var);
+
+// heredoc string
+$heredoc = <<<EOT
+hello world
+EOT;
+
+// unexpected values to be passed as $array_arg
+$inputs = array(
+
+ // int data
+/*1*/ 'int' => array(
+ 0 => 'zero',
+ 1 => 'one',
+ 12345 => 'positive',
+ -2345 => 'negative',
+ ),
+
+ // float data
+/*2*/ 'float' => array(
+ 10.5 => 'positive',
+ -10.5 => 'negative',
+ .5 => 'half',
+ ),
+
+/*3*/ 'extreme floats' => array(
+ 12.3456789000e6 => 'large',
+ 12.3456789000E-10 => 'small',
+ ),
+
+ // null data
+/*4*/ 'null uppercase' => array(
+ NULL => 'null 1',
+ ),
+
+/*5*/ 'null lowercase' => array(
+ null => 'null 2',
+ ),
+
+ // boolean data
+/*6*/ 'bool lowercase' => array(
+ true => 'lowert',
+ false => 'lowerf',
+ ),
+
+/*7*/ 'bool uppercase' => array(
+ TRUE => 'uppert',
+ FALSE => 'upperf',
+ ),
+
+ // empty data
+/*8*/ 'empty double quotes' => array(
+ "" => 'emptyd',
+ ),
+
+/*9*/ 'empty single quotes' => array(
+ '' => 'emptys',
+ ),
+
+ // string data
+/*10*/ 'string' => array(
+ "stringd" => 'stringd',
+ 'strings' => 'strings',
+ $heredoc => 'stringh',
+ ),
+
+ // undefined data
+/*11*/ 'undefined' => array(
+ @$undefined_var => 'undefined',
+ ),
+
+ // unset data
+/*12*/ 'unset' => array(
+ @$unset_var => 'unset',
+ ),
+);
+
+// loop through each element of $inputs to check the behavior of key()
+$iterator = 1;
+foreach($inputs as $key => $input) {
+ echo "\n-- Iteration $iterator : $key data --\n";
+ while (key($input) !== NULL) {
+ var_dump(key($input));
+ next($input);
+ }
+ $iterator++;
+};
+?>
+===DONE===
+--EXPECTF--
+*** Testing key() : usage variations ***
+
+-- Iteration 1 : int data --
+int(0)
+int(1)
+int(12345)
+int(-2345)
+
+-- Iteration 2 : float data --
+int(10)
+int(-10)
+int(0)
+
+-- Iteration 3 : extreme floats data --
+int(12345678)
+int(0)
+
+-- Iteration 4 : null uppercase data --
+string(0) ""
+
+-- Iteration 5 : null lowercase data --
+string(0) ""
+
+-- Iteration 6 : bool lowercase data --
+int(1)
+int(0)
+
+-- Iteration 7 : bool uppercase data --
+int(1)
+int(0)
+
+-- Iteration 8 : empty double quotes data --
+string(0) ""
+
+-- Iteration 9 : empty single quotes data --
+string(0) ""
+
+-- Iteration 10 : string data --
+string(7) "stringd"
+string(7) "strings"
+string(11) "hello world"
+
+-- Iteration 11 : undefined data --
+string(0) ""
+
+-- Iteration 12 : unset data --
+string(0) ""
+===DONE===
+--UEXPECTF--
+*** Testing key() : usage variations ***
+
+-- Iteration 1 : int data --
+int(0)
+int(1)
+int(12345)
+int(-2345)
+
+-- Iteration 2 : float data --
+int(10)
+int(-10)
+int(0)
+
+-- Iteration 3 : extreme floats data --
+int(12345678)
+int(0)
+
+-- Iteration 4 : null uppercase data --
+unicode(0) ""
+
+-- Iteration 5 : null lowercase data --
+unicode(0) ""
+
+-- Iteration 6 : bool lowercase data --
+int(1)
+int(0)
+
+-- Iteration 7 : bool uppercase data --
+int(1)
+int(0)
+
+-- Iteration 8 : empty double quotes data --
+unicode(0) ""
+
+-- Iteration 9 : empty single quotes data --
+unicode(0) ""
+
+-- Iteration 10 : string data --
+unicode(7) "stringd"
+unicode(7) "strings"
+unicode(11) "hello world"
+
+-- Iteration 11 : undefined data --
+unicode(0) ""
+
+-- Iteration 12 : unset data --
+unicode(0) ""
+===DONE===
--- /dev/null
+--TEST--
+Test key() function : usage variations
+--FILE--
+<?php
+/* Prototype : mixed key(array $array_arg)
+ * Description: Return the key of the element currently pointed to by the internal array pointer
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Test how the internal pointer is affected when two variables are referenced to each other
+ */
+
+echo "*** Testing key() : usage variations ***\n";
+
+$array1 = array ('zero', 'one', 'two');
+
+echo "\n-- Initial position of internal pointer --\n";
+var_dump(key($array1));
+
+// Test that when two variables are referenced to one another
+// the internal pointer is the same for both
+$array2 = &$array1;
+
+next($array1);
+
+echo "\n-- Position after calling next() --\n";
+echo "\$array1: ";
+var_dump(key($array1));
+echo "\$array2: ";
+var_dump(key($array2));
+?>
+===DONE===
+--EXPECTF--
+*** Testing key() : usage variations ***
+
+-- Initial position of internal pointer --
+int(0)
+
+-- Position after calling next() --
+$array1: int(1)
+$array2: int(1)
+===DONE===
+--UEXPECTF--
+*** Testing key() : usage variations ***
+
+-- Initial position of internal pointer --
+int(0)
+
+-- Position after calling next() --
+$array1: int(1)
+$array2: int(1)
+===DONE===
--- /dev/null
+--TEST--
+Test key() function : usage variations
+--FILE--
+<?php
+/* Prototype : mixed key(array $array_arg)
+ * Description: Return the key of the element currently pointed to by the internal array pointer
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Test how key() behaves with muti-dimensional and recursive arrays
+ */
+
+echo "*** Testing key() : usage variations ***\n";
+
+echo "\n-- Two Dimensional Array --\n";
+$multi_array = array ('zero', array (1, 2, 3), 'two');
+echo "Initial Position: ";
+var_dump(key($multi_array));
+
+echo "Next Position: ";
+next($multi_array);
+var_dump(key($multi_array));
+
+echo "End Position: ";
+end($multi_array);
+var_dump(key($multi_array));
+
+echo "\n-- Access an Array Within an Array --\n";
+//accessing an array within an array
+echo "Initial Position: ";
+var_dump(key($multi_array[1]));
+
+echo "\n-- Recursive, Multidimensional Array --\n";
+//create a recursive array
+$multi_array[] = &$multi_array;
+
+//See where internal pointer is after adding more elements
+echo "Current Position: ";
+var_dump(key($multi_array));
+
+//see if internal pointer is in same position as referenced array
+var_dump(key($multi_array[3][3][3]));
+// see if internal pointer is in the same position from when accessing this inner array
+var_dump(key($multi_array[3][3][3][1]));
+?>
+===DONE===
+--EXPECTF--
+*** Testing key() : usage variations ***
+
+-- Two Dimensional Array --
+Initial Position: int(0)
+Next Position: int(1)
+End Position: int(2)
+
+-- Access an Array Within an Array --
+Initial Position: int(0)
+
+-- Recursive, Multidimensional Array --
+Current Position: int(2)
+int(2)
+int(0)
+===DONE===
+--UEXPECTF--
+*** Testing key() : usage variations ***
+
+-- Two Dimensional Array --
+Initial Position: int(0)
+Next Position: int(1)
+End Position: int(2)
+
+-- Access an Array Within an Array --
+Initial Position: int(0)
+
+-- Recursive, Multidimensional Array --
+Current Position: int(2)
+int(2)
+int(0)
+===DONE===
projects / php / commitdiff