做一個SQL查詢的WHERE子句接受陣列

Question

我有六個要素（$categories = array('dinner','casual','wedding')）的數組，我想作一個SQL查詢應該是這樣的：

SELECT * FROM produts WHERE id = /* values of array $categories... eg. (dinner || casual || wedding) */

Answer 1

你一定要使用IN而不是WHERE。

Answer 2

試試這個：

$conditions = ''; 

foreach($categories as $cat) { 
    $conditions[] = " id = '".$cat."'"; 
} 

$sql = 'SELECT * FROM produts WHERE '.implode(" OR ", $conditions);