3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 5; $b = &$a; $c = &(++$a); $d = $b++; echo $c.$d;
Output for 5.3.0 - 5.3.26, 5.4.0 - 5.4.16
Parse error: syntax error, unexpected '(' in /in/UoAnS on line 4
Process exited with code 255.
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178.69 ms | 1395 KiB | 51 Q