SQL請求返回源ID

Question

我做這個請求： $uid = db_query("SELECT uid FROM tablename WHERE mail = 'test@test.com' LIMIT 1")

並獲得儘可能結果：

資源ID＃310

但我想要得到的UID。錯誤在哪裏？

Answer 1

db_query("SELECT uid FROM tablename WHERE mail = 'test@test.com' LIMIT 1"); 

只是給你一個「答案」，但你想要它的價值。試試這個：

$result = db_query("SELECT uid FROM tablename WHERE mail = 'test@test.com' LIMIT 1"); 
$row = db_fetch_array($result); 
$uid = $row[0];