Question

我試圖選擇滿足以下一系列條件的數據。

問題是，我位於新西蘭（UTC + 12），服務器是共享的 - 即時區不可更新（以及UTC-8）。我試圖在我的查詢開始時使用SET time_zone，但它似乎不起作用。

真的很感激任何想法。

function getIndivDeal($id) { 
    $result = mysql_query(" 
     SET time_zone = '+19:00' 
     SELECT i, company, deal_type, deal_title, deal_message, valid_time_start, 
     valid_time_end, DATE_FORMAT(valid_expiry, '%D %b %y'), valid_mon, 
     valid_tue, valid_wed, valid_thu, valid_fri, valid_sat, valid_sun 
     WHERE i = '" .mysql_real_escape_string($id). "' 
     AND valid_expiry > CURDATE() 
     AND valid_time_start >= CURTIME() 
     AND valid_time_end < CURTIME() 
     AND CASE DAYOFWEEK(CURDATE()) 
     WHEN 1 THEN valid_mon 
     WHEN 2 THEN valid_mon 
     WHEN 3 THEN valid_tue 
     WHEN 4 THEN valid_wed 
     WHEN 5 THEN valid_thu 
     WHEN 6 THEN valid_fri 
     WHEN 7 THEN valid_sat 
     END = 1 
    "); 
    return $result; 
} 

// $result is used in another file like so: 
$id = 2501; 
getIndivDeal($id) 
$result = getIndivDeal($id); 
if (mysql_num_rows($result)) { 
    while($row = mysql_fetch_array($result)) { 
     echo $row["TIME_FORMAT(valid_time_start, '%l:%i %p')"]; 
    } 
} 

，直到我加入SET TIME_ZONE它工作正常，然後將它吐出以下錯誤：
Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in..

Answer 1

也許它會產生正無效MySQL查詢！你試過

mysql_query("SET time_zone = '+19:00'"); 
$result = mysql_query(" 
    SELECT i, company, deal_type, deal_title, deal_message, valid_time_start, 
    valid_time_end, DATE_FORMAT(valid_expiry, '%D %b %y'), valid_mon, 
    valid_tue, valid_wed, valid_thu, valid_fri, valid_sat, valid_sun 
    WHERE i = '" .mysql_real_escape_string($id). "' 
    AND valid_expiry > CURDATE() 
    AND valid_time_start >= CURTIME() 
    AND valid_time_end < CURTIME() 
    AND CASE DAYOFWEEK(CURDATE()) 
    WHEN 1 THEN valid_mon 
    WHEN 2 THEN valid_mon 
    WHEN 3 THEN valid_tue 
    WHEN 4 THEN valid_wed 
    WHEN 5 THEN valid_thu 
    WHEN 6 THEN valid_fri 
    WHEN 7 THEN valid_sat 
    END = 1 
"); 
return $result; 

希望有幫助嗎？