3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=1; $b=&$a; echo (++$a) echo (++$a)+($a++); echo $a; echo $b;
Output for 5.4.0 - 5.4.22
Parse error: syntax error, unexpected 'echo' (T_ECHO), expecting ',' or ';' in /in/99ttZ on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_ECHO, expecting ',' or ';' in /in/99ttZ on line 5
Process exited with code 255.
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181.85 ms | 1395 KiB | 58 Q