PHP - Function array_intersect_key()
Syntax
array array_intersect_key ( array $array1, array $array2 [, array $array3 ...] );
Definition and Usage
It returns an array containing all the values of array1 which have matching keys that are present in all the arguments.
Parameters
| Sr.No | Parameter & Description |
|---|---|
| 1 |
array1(Required) The first array is the array that the others will be compared with. |
| 2 |
array2(Required) This is an array to be compared with the first array |
| 3 |
array3(Optional) This is an array to be compared with the first array |
Return Values
It returns FALSE if there is any error.
Example
Try out following example −
<?php
$input1 = array('black' => 1, 'red' => 2, 'green' => 3 );
$input2 = array('green' => 4, 'black' => 5, 'pink' => 6,);
$result = array_intersect_key($input1, $input2);
print_r($result);
?>
This will produce the following result −
Array ( [black] => 1 [green] => 3 )
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