PHP array_uintersect_assoc() Function Usage and Example

PHP Array Function Manual

The array_uintersect_assoc() function calculates the intersection of arrays with index checking, using a callback function to compare data

Syntax

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

Definition and Usage

　This comparison is performed through the user-provided callback function. A negative integer, zero, or a positive integer must be returned respectively when the first parameter is considered to be less than, equal to, or greater than the second parameter.
Note: Unlike array_uintersect(), the key names are also compared. The data is compared using a callback function.

Return Value

　Returns an array that contains all the values in the array1 values that also appear in all other parameter arrays.　

Parameter

Online Example

<?php
　　　$input1　=　array("a"=>"green",　"b"=>"brown",　"c"=>"blue",　"red");
　　　$input2　=　array("a"=>"GREEN",　"B"=>"brown",　"yellow",　"red");
　　　
　　　print_r(array_uintersect_assoc($input1,　$input2,　"strcasecmp");
?>

Output Result：

Array　(　[a]　=>　green　)

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