3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a' => 'some value', 'b' => 'some value', 'c' => 'some value'); $b = array('a' => 'another value', 'd' => 'another value', 'e' => 'another value', 'f' => 'another value'); $c = array('b' => 'some more value', 'x' => 'some more value', 'y' => 'some more value', 'z' => 'some more value'); $merged = array_merge($a, $b); var_dump($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, 7.2.6 - 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 - 8.3.6
array(6) { ["a"]=> string(13) "another value" ["b"]=> string(10) "some value" ["c"]=> string(10) "some value" ["d"]=> string(13) "another value" ["e"]=> string(13) "another value" ["f"]=> string(13) "another value" }

preferences:
213.04 ms | 406 KiB | 312 Q