3v4l.org

run code in 300+ PHP versions simultaneously
<?php $farts = "farts"; $farts$farts = "shit"; echo "$farts\n"; echo $farts$farts;
Output for 5.4.0 - 5.4.25
Parse error: syntax error, unexpected '$farts' (T_VARIABLE) in /in/FuksD on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_VARIABLE in /in/FuksD on line 3
Process exited with code 255.

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