PHP array_uintersect() function usage and example

PHP Array Function Manual

The array_uintersect() function calculates the intersection of arrays using a callback function to compare data

Syntax

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

Definition and usage

array_uintersect() returns an array that contains all the elements in array1 values that 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. You must return an integer less than, equal to, or greater than zero if you think the first parameter is less than, equal to, or greater than the second parameter.

Return value

This function returns an array containing all array1All values. Use callback function 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