--- /dev/null
+--TEST--
+Test gethostbyaddr() function : error conditions
+--FILE--
+<?php
+/* Prototype : proto string gethostbyaddr(string ip_address)
+ * Description: Get the Internet host name corresponding to a given IP address
+ * Source code: ext/standard/dns.c
+ * Alias to functions:
+ */
+
+
+echo "Testing gethostbyaddr : error conditions\n";
+
+// Zero arguments
+echo "\n-- Testing gethostbyaddr function with Zero arguments --\n";
+var_dump( gethostbyaddr() );
+
+//Test gethostbyaddr with one more than the expected number of arguments
+echo "\n-- Testing gethostbyaddr function with more than expected no. of arguments --\n";
+$ip_address = 'string_val';
+$extra_arg = 10;
+var_dump( gethostbyaddr($ip_address, $extra_arg) );
+
+echo "\n-- Testing gethostbyaddr function with invalid addresses --\n";
+
+$ip_address = 'invalid';
+var_dump( gethostbyaddr($ip_address) );
+
+$ip_address = '300.1.2.3';
+var_dump( gethostbyaddr($ip_address) );
+
+$ip_address = '256.1.2.3';
+var_dump( gethostbyaddr($ip_address) );
+
+echo "Done";
+?>
+--EXPECTREGEX--
+Testing gethostbyaddr : error conditions
+
+-- Testing gethostbyaddr function with Zero arguments --
+
+Warning: Wrong parameter count for gethostbyaddr\(\) in .* on line \d+
+NULL
+
+-- Testing gethostbyaddr function with more than expected no. of arguments --
+
+Warning: Wrong parameter count for gethostbyaddr\(\) in .* on line \d+
+NULL
+
+-- Testing gethostbyaddr function with invalid addresses --
+
+Warning: gethostbyaddr\(\): Address is not (in a.b.c.d form|a valid IPv4 or IPv6 address) in .* on line \d+
+bool\(false\)
+
+Warning: gethostbyaddr\(\): Address is not (in a.b.c.d form|a valid IPv4 or IPv6 address) in .* on line \d+
+bool\(false\)
+
+Warning: gethostbyaddr\(\): Address is not (in a.b.c.d form|a valid IPv4 or IPv6 address) in .* on line \d+
+bool\(false\)
+Done
--- /dev/null
+--TEST--
+Test gethostbynamel() function : error conditions
+--FILE--
+<?php
+/* Prototype : proto array gethostbynamel(string hostname)
+ * Description: Return a list of IP addresses that a given hostname resolves to.
+ * Source code: ext/standard/dns.c
+ * Alias to functions:
+ */
+
+echo "*** Testing gethostbynamel() : error conditions ***\n";
+
+// Zero arguments
+echo "\n-- Testing gethostbynamel() function with Zero arguments --\n";
+var_dump( gethostbynamel() );
+
+//Test gethostbynamel with one more than the expected number of arguments
+echo "\n-- Testing gethostbynamel() function with more than expected no. of arguments --\n";
+$hostname = 'string_val';
+$extra_arg = 10;
+var_dump( gethostbynamel($hostname, $extra_arg) );
+
+echo "\n-- Testing gethostbynamel() with an unknown host --\n";
+$hostname = 'unknownhost_zzz_xxx_yyy';
+var_dump( gethostbynamel($hostname) );
+
+echo "Done";
+?>
+--EXPECTF--
+*** Testing gethostbynamel() : error conditions ***
+
+-- Testing gethostbynamel() function with Zero arguments --
+
+Warning: Wrong parameter count for gethostbynamel() in %s on line %d
+NULL
+
+-- Testing gethostbynamel() function with more than expected no. of arguments --
+
+Warning: Wrong parameter count for gethostbynamel() in %s on line %d
+NULL
+
+-- Testing gethostbynamel() with an unknown host --
+bool(false)
+Done