PHP Tutorial - PHP array_uintersect_assoc() Function

Definition

The array_uintersect_assoc() function uses a user function to compare the keys and values of two or more arrays, and returns the matches.

Syntax

PHP array_uintersect_assoc() Function has the following syntax.

array_uintersect_assoc(array1,array2,array3...,myfunction)

Parameter

Parameter	Is Required	Description
array1	Required.	The array to compare from
array2	Required.	An array to compare against
array3,...	Optional.	More arrays to compare against
myfunction	Required.	Comparison function name.

myfunction must return an integer <, =, or > than 0 if the first argument is <, =, or > than the second argument.

Example

Uses a user function to compare the keys and values of two or more arrays, and returns the matches


<?php/*www .  ja v a  2 s  . c  o m*/
    function myfunction($a,$b){
       if ($a===$b){
          return 0;
       }
       return ($a>$b)?1:-1;
    }
    
    $a1=array("a"=>"A","b"=>"B","c"=>"C");
    $a2=array("a"=>"A","b"=>"X","c"=>"java2s.com");
    
    $result=array_uintersect_assoc($a1,$a2,"myfunction");
    print_r($result);
?>

The code above generates the following result.