PHP array_uintersect() Function Usage and Example

PHP Array Function Manual

The array_uintersect() function calculates the intersection of arrays, comparing data using a callback function

Syntax

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

Definition and usage

The array_uintersect() function returns an array that contains all values that exist in array1 and also appear in all other parameter arrays. Data comparison is done using a callback function. This comparison is done through the callback function provided by the user. A negative integer, zero, or a positive integer must be returned when the first parameter is considered to be less than, equal to, or greater than the second parameter.

Return value

This function returns an array containing all the values of array1 that exist in all parameters. Use callback functions to compare data.

Parameter

Online example

<?php
　　　$array1　=　array("a"=>"green",　"b"=>"brown",　"c"=>"blue",　"red");
　　　$array2　=　array("a"=>"GREEN",　"B"=>"brown",　"yellow",　"red");
　　　
　　　print_r(array_uintersect($array1, $array2, "strcasecmp"));
?>

Output result:

Array　(　[a]　=>　green　[b]　=>　brown　[0]　=>　red　)

PHP Array Function Manual