3v4l.org

run code in 300+ PHP versions simultaneously
<?php print "a"."2"; print "a".2; ?>
Output for 5.4.0 - 5.4.12
Parse error: syntax error, unexpected '.2' (T_DNUMBER) in /in/ZR7EG on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.22
Parse error: syntax error, unexpected T_DNUMBER in /in/ZR7EG on line 3
Process exited with code 255.
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179.09 ms | 1395 KiB | 43 Q