php：如何檢查一個mysql數據是否過期

Question

我有一個mysql格式的數據，例如：「2015-02-09 23:12:33」 有沒有辦法檢查這個數據是24小時還是更老？

感謝

Answer 1

使用MySql Date功能

SELECT DATEDIFF(dateColumn, NOW()) as "diff" FROM tableName HAVING diff < 1; 

未測試

---

在PHP（使用PDO）：

$query = $db->prepare('SELECT `dateColumn` FROM `tableName`'); 
$query->execute(); 
$result = $sth->fetchAll(PDO::FETCH_CLASS); 

foreach ($result as $date) { 
    $time = strtotime($date->dateColumn); 

    if (time() - $time < 60 * 60 * 24) { 
     // It's less than 24h ago; 
    } else { 
     // It's more than 24h ago; 
    } 
} 

只需爲PDO設置正確的參數即可將行作爲對象提取。

Answer 2

試試這個：

SELECT 
IF(yourDate<DATE_SUB(NOW(), INTERVAL 1 DAY), 1, 0) AS expired 

或本：

SELECT 
IF(yourDate<DATE_SUB(NOW(), 24 HOUR), 1, 0) AS expired