array_diff 배열값 제외 출력
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
)