3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = [0, 1, 2, 3]; unset($x[0]); // There's no index 0. function foo(...$arg) { var_dump($arg); } var_dump(...$x); foo($x); // Yet no errors or nothing: [0 => 1, 1 => 2, 2 => 3] $y = [0, 1]; $y[3] = 3; // Adding elements out of order. $y[2] = 2; var_dump($y); // Out of order: [0 => 0, 1 => 1, 3 => 3, 2 => 2] foo(...$y); // Uses the order, not the indexes: [0 => 0, 1 => 1, 2 => 3, 3 => 2]
Output for 7.0.0 - 7.0.20, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
int(1) int(2) int(3) array(1) { [0]=> array(3) { [1]=> int(1) [2]=> int(2) [3]=> int(3) } } array(4) { [0]=> int(0) [1]=> int(1) [3]=> int(3) [2]=> int(2) } array(4) { [0]=> int(0) [1]=> int(1) [2]=> int(3) [3]=> int(2) }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 int(1) int(2) int(3) array(1) { [0]=> array(3) { [1]=> int(1) [2]=> int(2) [3]=> int(3) } } array(4) { [0]=> int(0) [1]=> int(1) [3]=> int(3) [2]=> int(2) } array(4) { [0]=> int(0) [1]=> int(1) [2]=> int(3) [3]=> int(2) }
preferences:
164.89 ms | 402 KiB | 188 Q