php 複数の連想配列の差分を取得する

array_diff_assoc(連想配列, 連想配列, ... )

<?php

$arr1 = ["a" => 1, "b" => 2, "c" => 3, "d" => 4];
$arr2 = ["a" => 1, "b" => 3, "c" => 4, "e" => 5];

$result = array_diff_assoc($arr1, $arr2);

print_r($result);

Array
(
    [b] => 2
    [c] => 3
    [d] => 4
)

<?php

$arr1 = ["a" => 1, "b" => 2, "c" => 3, "d" => 4];
$arr2 = ["a" => 1, "b" => 3, "c" => 4, "e" => 5];
$arr3 = ["c" => 3];

$result = array_diff_assoc($arr1, $arr2, $arr3);

print_r($result);

Array
(
    [b] => 2
    [d] => 4
)

<?php

$arr1 = ["a" => 1, "b" => 2.1, "c" => 3, "d" => 4];
$arr2 = ["a" => "1", "b" => "2.1"];

$result = array_diff_assoc($arr1, $arr2);

print_r($result);

Array
(
    [c] => 3
    [d] => 4
)