3v4l.org

run code in 300+ PHP versions simultaneously
<?php string gethostbyaddr ( string $ip_address )
Output for 5.4.0 - 5.4.9
Parse error: syntax error, unexpected 'gethostbyaddr' (T_STRING) in n1Mc0 on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.19
Parse error: syntax error, unexpected T_STRING in n1Mc0 on line 2
Process exited with code 255.

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