array_merge()¶
array_merge() combines all the arrays passed as argument into one argument.
array_merge() accepts an arbitrary list of arrays: in terms of performances, it is better to call it with all the arrays once, rather than merge arrays one after the other.
<?php
$array1 = [1, 2, 3];
$array2 = [4, 5, 6];
array_merge($array1, $array2);
// [1, 2, 3, 4, 5, 6];
$arrays = [$array1, $array2]; // may be more...
array_merge(...$arrays);
// [1, 2, 3, 4, 5, 6];
?>
See also Effortlessly Merge Arrays: When to Use array_merge vs. the Splat Operator.
