解析錯誤MySQL的2個變量

Question

我的代碼是這樣的

$newentry = " 
    UPDATE url 
    FROM auction_media 
    JOIN auctions ON auction_media.auction_id = auctions.auction_id            
    SET media_url = '$row2['url']/$match[0]' 
    WHERE media_type = '3'"; 

我得到的錯誤是

解析錯誤：語法錯誤，意想不到的T_ENCAPSED_AND_WHITESPACE，期待T_STRING或T_VARIABLE或T_NUM_STRING

Answer 1

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Answer 2

這段代碼似乎是錯誤的：

SET media_url = '$row2['url']/$match[0]' 

更正如下：

SET media_url = '" . $row2['url'] . "/" . $match[0] . "' 

試試這個：

$newentry = "UPDATE url FROM auction_media JOIN auctions ON auction_media.auction_id = auctions.auction_id SET media_url = '" . $row2['url'] . "/" . $match[0] . "' WHERE media_type = '3'"; 

Answer 3

假設查詢將實際工作：

$newentry = "UPDATE url 
    FROM auction_media 
    JOIN auctions 
     ON auction_media.auction_id = auctions.auction_id 
    SET media_url = '" . $row2['url'] . '/' . $match[0] . "' 
    WHERE media_type = '3'";