PHP - Function array_udiff()


Advertisements


Syntax

array_udiff( $array1, $array2 [, $array3 ..., $data_compare_func] );

Definition and Usage

Computes the difference of arrays by using a callback function for data comparison and returns an array containing all the values from array1 that are not present in any of the other arguments.

Parameters

Sr.No Parameter & Description
1

array1

Required. Specifies an array.

2

array2

Required. Specifies an array to be compared with the first array.

3

array3

Optional. Specifies an array to be compared with the first array.

4

data_compare_func

Required. The name of the user-made function.

Return Values

Returns an array containing all the values from array1 that are not present in any of the other arguments.

Example

Try out following example −

<?php
   function call_back_function($v1,$v2) {
      if ($v1 === $v2) {
         return 0;
      }
      return 1;
   }
   $array1 = array("a"=>"orange","b"=>"mango","c"=>"banana");
   $array2 = array("a"=>"orange","b"=>"mango","c"=>"apple");
   
   print_r(array_udiff_assoc($array1,$array2,"call_back_function"));
?> 

This will produce the following result −

Array ( [c] => banana )	

php_function_reference.htm