3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=1; $b=&$a; echo ++$a+ ++$a; echo $b
Output for 5.4.0 - 5.4.22
Parse error: syntax error, unexpected end of file, expecting ',' or ';' in /in/sGGk8 on line 6
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected $end, expecting ',' or ';' in /in/sGGk8 on line 6
Process exited with code 255.
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184.36 ms | 1394 KiB | 58 Q