PHP array_diff_assoc() Function

The array_diff_assoc() function is an inbuilt function in PHP that compares two or more arrays and returns the differences, considering both keys and values. This function was introduced in PHP 4.0.

Syntax


array array_diff_assoc ( array $array1 , array $array2 [, array $... ] );

Parameters

Parameter Description Is Compulsory
array1 The first array to compare. Compulsory
array2 The array to compare against. Compulsory
... Additional arrays to compare against. Optional

Return Values

The array_diff_assoc() function returns an array containing all elements from array1 that are not present in any of the other arrays, considering both keys and values.

PHP Example


<?php  
$array1 = array("a" => "red", "b" => "green", "c" => "blue");  
$array2 = array("a" => "red", "c" => "yellow", "d" => "pink");  
print_r(array_diff_assoc($array1, $array2));  
?>

Output

Array
(
[b] => green
[c] => blue
)

PHP Example


<?php  
$array1 = array("a" => "apple", "b" => "banana", "c" => "cherry");  
$array2 = array("b" => "banana", "d" => "dragonfruit");  
$array3 = array("c" => "cherry", "e" => "elderberry");  
print_r(array_diff_assoc($array1, $array2, $array3));  
?>

Output

Array ( [a] => apple
)