PHP array_uintersect() Function

Complete PHP Array Reference

Definition and Usage

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

Syntax

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

Tips and Notes

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

Note: Only the value is used in the comparison.

Example

<?php
function myfunction($v1,$v2) 
{
if ($v1===$v2)
  {
  return 0;
  }
if ($v1 > $v2) return 1;
  {
  return -1;
  }
return 1;
}
$a1=array("a"=>"Cat","b"=>"Dog","c"=>"Horse");
$a2=array(1=>"Cat",2=>"Dog",3=>"Fish");
print_r(array_uintersect($a1,$a2,"myfunction"));
?>

The output of the code above will be:

Array ( [a] => Cat [b] => Dog )

Complete PHP Array Reference

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