PHP array_uintersect_assoc() Function

Complete PHP Array Reference

Definition and Usage

The array_uintesect_assoc() function compares two or more arrays, both in a built in function and in a user-made function, and then returns an array containing the elements from the first array, if the functions allow it. The built in function compares the keys. The user-made function compares the values, and returns a numeric value, 0 if the returned array should contain this element.

Syntax

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

Tips and Notes

Tip: You can compare the first array with one array, or as many as you like.

Note: For comparison, the key is used in the built-in function and the value is used in the user-made function.

Example

<?php
function myfunction($v1,$v2) 
{
if ($v1===$v2)
	{
	return 0;
	}
return 1;
}
$a1=array("a"=>"Cat","b"=>"Dog","c"=>"Horse");
$a2=array("a"=>"Cat","b"=>"Horse","c"=>"Dog");
print_r(array_uintersect_assoc($a1,$a2,"myfunction"));
?>

The output of the code above will be:

Array ( [a] Cat )

Complete PHP Array Reference

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