3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array1 = array( 'group 1' => array( 'test 1', 'test 2', 'test 3' ) ); $array2 = array( 'group 1' => array( 'test 1', 'test 4' ), 'group 2' => array( 'test2 1', 'test2 2', 'test 4' ) ); $merged = array_merge($array1, $array2); var_dump($merged);
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, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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
array(2) { ["group 1"]=> array(2) { [0]=> string(6) "test 1" [1]=> string(6) "test 4" } ["group 2"]=> array(3) { [0]=> string(7) "test2 1" [1]=> string(7) "test2 2" [2]=> string(6) "test 4" } }
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 array(2) { ["group 1"]=> array(2) { [0]=> string(6) "test 1" [1]=> string(6) "test 4" } ["group 2"]=> array(3) { [0]=> string(7) "test2 1" [1]=> string(7) "test2 2" [2]=> string(6) "test 4" } }

preferences:
190.01 ms | 402 KiB | 312 Q