3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(); printf serialize($a) . '\n'; print serialize(base64_encode(serialize($a)));
Output for 5.4.0 - 5.4.27
Parse error: syntax error, unexpected 'serialize' (T_STRING) in /in/VfTlL on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_STRING in /in/VfTlL on line 4
Process exited with code 255.
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204.74 ms | 1399 KiB | 64 Q