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:

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

PHP Function Reference

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