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run code in 300+ PHP versions simultaneously
<?php $to      = "nobody@example.com"; $subject = "the subject"; $message = "hello"; $headers = "From: webmaster@example.com\r\nReply-To: webmaster@example.com\r\nX-Mailer: PHP/" . phpversion(); mail($to, $subject, $message, $headers);
Output for 5.4.0 - 5.4.32
Parse error: syntax error, unexpected '$subject' (T_VARIABLE) in /in/cCivd on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_VARIABLE in /in/cCivd on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_VARIABLE in /in/cCivd on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/cCivd on line 7
Process exited with code 255.

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