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array_merge_recursive
(PHP 4 >= 4.0.1, PHP 5, PHP 7)
array_merge_recursive — Merge one or more arrays recursively
Description
$...
] ) : arrayarray_merge_recursive() merges the elements of one or more arrays together so that the values of one are appended to the end of the previous one. It returns the resulting array.
If the input arrays have the same string keys, then the values for these keys are merged together into an array, and this is done recursively, so that if one of the values is an array itself, the function will merge it with a corresponding entry in another array too. If, however, the arrays have the same numeric key, the later value will not overwrite the original value, but will be appended.
Return Values
An array of values resulted from merging the arguments together. If called without any arguments, returns an empty array.
Changelog
| Version | Description |
|---|---|
| 7.4.0 | This function can now be called without any parameter. Formerly, at least one parameter has been required. |
Examples
Example #1 array_merge_recursive() example
<?php
$ar1 = array("color" => array("favorite" => "red"), 5);
$ar2 = array(10, "color" => array("favorite" => "green", "blue"));
$result = array_merge_recursive($ar1, $ar2);
print_r($result);
?>
The above example will output:
Array
(
[color] => Array
(
[favorite] => Array
(
[0] => red
[1] => green
)
[0] => blue
)
[0] => 5
[1] => 10
)
See Also
- array_merge() - Merge one or more arrays
- array_replace_recursive() - Replaces elements from passed arrays into the first array recursively
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