PHP: array_diff() function
PHP: Computes the difference of arrays
The array_diff() function is used to compares an array against one or more other arrays and returns the values in the first array that are not present in any of the other arrays.
Version:
(PHP 4 and above)
Syntax:
array_diff(array1, array2, array3 ...)
Parameter:
| Name | Description | Required / Optional |
Type |
|---|---|---|---|
| array1 | The specified array which will be compared with other arrays. | Required | Array |
| array2 | Compared with the first array. | Required | Array |
| array3 | Compared with the first array. | Optional | Array |
Return value:
An array containing all the entries from array1 whose values are not present in any of the other arrays i.e. array2, array3 etc.
Value Type: Array
Example:
<?php
$array1 = array(0=> 'Language', 1=>'Math', 2=>'Science', 3=>'Geography');
$array2 = array(0=> 'Math', 1=>'Science', 2=>'History');
$diff_result = array_diff($array1, $array2);
print_r($diff_result);
?>
Output:
Array ( [0] => Language [3] => Geography)
Pictorial Presentation:
View the example in the browser
Practice here online:
See also
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