A배열에서 B배열의 값을 제외한 A배열에 값을 출력하고 싶을 경우 사용합니다.

 

array_diff

 

(PHP 4 >= 4.0.1, PHP 5, PHP 7)

array_diff — Computes the difference of arrays

 

Description ¶

 

array array_diff ( array $array1 , array $array2 [, array $... ] )

Compares array1 against one or more other arrays and returns the values in array1 that are not present in any of the other arrays.

 

Parameters ¶

 

array1

The array to compare from

 

array2

An array to compare against

 

...

More arrays to compare against

 

Return Values ¶

 

Returns an array containing all the entries from array1 that are not present in any of the other arrays.

 

Examples ¶

 

Example #1 array_diff() example

 

<?php

$array1 = array("a" => "green", "red", "blue", "red");

$array2 = array("b" => "green", "yellow", "red");

$result = array_diff($array1, $array2);

 

print_r($result);

?>

Multiple occurrences in $array1 are all treated the same way. This will output :

 

Array

(

    [1] => blue

)