3v4l.org

run code in 300+ PHP versions simultaneously
<?php preg_replace('/ (\\))|(\\() /', '$1$2', ' ( blah )
Output for 5.4.0 - 5.4.29
Parse error: syntax error, unexpected '' ( blah )' (T_ENCAPSED_AND_WHITESPACE) in /in/Ngi8h on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_ENCAPSED_AND_WHITESPACE in /in/Ngi8h on line 2
Process exited with code 255.
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180.29 ms | 1394 KiB | 66 Q