PHP - Function array_diff_assoc()


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Syntax

array array_diff_assoc( array $array1, array $array2 [, array $array3...] );

Definition and Usage

Compares array1 against array2 and returns the difference. Unlike array_diff() the array keys are used in the comparison.

Parameters

Sr.No Parameter & Description
1

array1

Required. The array to compare from

2

array2

Required. An array to be compared with the first array

3

array3

Optional. An array to be compared with the first array

Return Values

Returns an array containing all the values from array1 that are not present in any of the other arrays with the same keys.

Example

Try out following example −

<?php
   $input_array1 = array( "a"=>"orange", "b"=>"mango", "c"=>"banana");
   $input_array2 = array( "a"=>"orange", "b"=>"apple", "c"=>"banana");
   print_r(array_diff_assoc($input_array1, $input_array2));
   
   $input_array1 = array( "a"=>"orange", "b"=>"mango", "c"=>"banana");
   $input_array2 = array( "a"=>"banana", "b"=>"apple", "c"=>"orange");
   print_r(array_diff_assoc($input_array1, $input_array2));
?> 

This will produce the following result −

Array ( [b] => mango )
Array ( [a] => orange [b] => mango [c] => banana )

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