參數

• $array1 (array) - 需要比較的第一個數組。
• $array2 (array) - 需要與第一個數組進行比較的數組。
• $arrays (array) - 可選，多個數組，可以傳遞多個數組進行比較。

返回值

返回一個數組，包含所有在第一個數組中存在，但在其他數組中不存在的鍵值對。如果沒有差異，返回空數組。

示例

$array1 = array("a" => "apple", "b" => "banana", "c" => "cherry");
$array2 = array("a" => "apple", "b" => "banana");
$array3 = array("a" => "apple", "c" => "cherry");

$result = array_diff_assoc($array1, $array2, $array3);
print_r($result);

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<p>在這個例子中， <span class="fun">$array1</span>包含了三個元素，而<span class="fun">$array2</span>和<span class="fun">$array3</span>都與<span class="fun">$array1</span>有相同的部分。通過<span class="fun">array_diff_assoc</span>比較後，會得到一個結果，只有<span class="fun">$array1</span>獨有的鍵值對。</p>
<p>執行代碼後，輸出如下：</p>
<pre class="">