Quick Reference
The PHP array_intersect() function compares the values of two or more arrays, and returns an array of entries from array1 that exist in the other array(s).
Only the values are compared. Not the keys.
<?php
$a1 = array('Car 1' => 'Lamborghini', 'Car 2' => 'Ferrari', 'Car 3' => 'Maserati');
$a2 = array('Car 1' => 'Ferrari', 'Car 2' => 'Maserati');
$result = array_intersect($a1, $a2);
print_r($result);
?>Note
Arrays count starting from zero NOT one. So item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on.
Output
Array ( [Car 2] => Ferrari [Car 3] => Maserati )Syntax
array_intersect(array1, array2, array3, ...)Parameters
| Parameter | Description |
|---|---|
| array1 | The array to compare from (required) |
| array2 | The array to compare against (required) |
| array3, ... | Additional arrays to compare against |
PHP Notes:
- When using PHP, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
- Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
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