3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; $c = $a + $a++; var_dump($c); // int(3) $a = 1; $c = $a + $a + $a++; var_dump($c); // int(3) $a = 1; @$c = $a + $a + $a++; var_dump($c); // int(3)
Output for 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(3) int(3) int(3)
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/uGHbW on line 13
Process exited with code 255.
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5
int(2) int(3) int(3)
preferences:
285.28 ms | 402 KiB | 460 Q