❮ PHP Array Reference
Merge two arrays into one array:
<?php
$a1=array(“red”,”green”);
$a2=array(“blue”,”yellow”);
print_r(array_merge($a1,$a2));
?>
Try it Yourself »
The array_merge() function merges one or more arrays into one array.
Tip: You can assign one array to the function, or as many as you like.
Note: If two or more array elements have the same key, the last one overrides the others.
Note: If you assign only one array to the array_merge() function, and the keys are integers, the function returns a new array with integer keys starting at 0 and increases by 1 for each value (See example below).
Tip:
The difference between this function and the array_merge_recursive() function is when two or more array elements have the same key. Instead of override the keys, the array_merge_recursive() function makes the value as an array.
array_merge(array1, array2, array3, …)
ParameterDescriptionarray1
Required. Specifies an array
array2
Optional. Specifies an array
array3,…
Optional. Specifies an array
