PHP array_intersect_ukey() Function

Complete PHP Array Reference

Definition and Usage

The array_intersect_ukey() function compares the keys in two or more arrays, checking for matches, before comparing the keys in a user-defined function, then returns an array with the keys and values from the first array, if the function allows it.

Syntax

array_intersect_ukey(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 keys have to be the same to get a match, both in the automatic comparison and in the user-defined function.

Example 1

<?php
function myfunction($v1,$v2) 
{
if ($v1===$v2)
	{
	return 0;
	}
if ($v1>$v2)
	{
	return 1;
	}
else
	{
	return -1;
	}
}
$a1=array(0=>"Dog",1=>"Cat",2=>"Horse");
$a2=array(3=>"Rat",1=>"Bird",5=>"Monkey");
print_r(array_intersect_ukey($a1,$a2,"myfunction"));
?> 

The output of the code above will be:

Array ( [] => Cat )

Example 2

How to assign more than two arrays to the function

<?php
function myfunction($v1,$v2) 
{
if ($v1===$v2)
	{
	return 0;
	}
if ($v1>$v2)
	{
	return 1;
	}
else
	{
	return -1;
	}
}
$a1=array(0=>"Dog",1=>"Cat",2=>"Horse");
$a2=array(0=>"Rat",1=>"Bird",5=>"Monkey");
$a3=array(6=>"Dog",7=>"Donkey",0=>"Horse");
print_r(array_intersect_ukey($a1,$a2,$a3,"myfunction"));
?> 

The output of the code above will be:

Array ( [0] => Dog )

Complete PHP Array Reference

The Ektron Intranet lets you do everything you need to do on your corporate intranet and everything you want to do... all with just one application.

What can you do with the Ektron Intranet? Navigate through content, documents, assets, colleagues and workgroups quickly and intuitively with enterprise search Communicate with friends and colleagues with forums, message boards and corporate blogging using the new Social Networking Platform Promote collaboration among coworkers in your organization through project workspaces where others can efficiently find information and work together Personalize your company profile by bookmarking and organizing favorite content, uploading assets, posting photos, blogging, and more Interact with features like tagging, flagging, wikis and ratings found in the Web 2.0 Toolbox Author/edit content, manage navigation, menus, audit trails, workflow and approvals with the best in breed Content Management

See why there are 20,000+ Ektron integrations worldwide. Request an INSTANT DEMO or download a FREE TRIAL today.

Jump to: Top of Page or HOME or Printer friendly page

W3Schools provides material for training only. We do not warrant the correctness of its contents. The risk from using it lies entirely with the user. While using this site, you agree to have read and accepted our terms of use and privacy policy.

Copyright 1999-2008 by Refsnes Data. All Rights Reserved.

W3Schools was converted to XHTML in December 1999