3v4l.org

run code in 300+ PHP versions simultaneously
<?php function getX(){return 123;} function getY($x){return $x*2;} function getZ($y){return $y*2;} if( true && ($x = getX()) && ($y=getY($x)) && ($z=getZ($y)) ) {echo('true '.$x.' '.$y.' '.$z);} else {echo('false '.$x);}
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 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 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 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 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.16, 8.4.1 - 8.4.3
true 123 246 492
preferences:
147.84 ms | 410 KiB | 5 Q