带语法错误的PHP更新查询

Question

有谁能告诉我为什么这不起作用，并返回语法错误吗？

$sql4 = "update apiStreetCheckGeneral 
     set (BBAverageSpeed, BBSuperFastBBAvailable, BBCommentary) 
      values ('$averagespeed', '$superfast', '$bbcommentary') 
     where PostCode='".$values['PostCode']."'"; 
CustomQuery($sql4); 

Answer 1

这是您的查询：

update apiStreetCheckGeneral set (BBAverageSpeed, BBSuperFastBBAvailable, BBCommentary) 
    values ('$averagespeed', '$superfast', '$bbcommentary') 
    where PostCode='".$values['PostCode']. 

我不知道使用列列表或valuesupdate语法。单独设置每个：

update apiStreetCheckGeneral 
    set BBAverageSpeed = '$averagespeed', 
     BBSuperFastBBAvailable = '$superfast', 
     BBCommentary = '$bbcommentary' 
    where PostCode='".$values['PostCode']."'" 

你应该学习，但是，使用参数化查询为update声明特别。

Answer 2

使用查询像下面

$sql4 = "update apiStreetCheckGeneral 
     set BBAverageSpeed = '$averagespeed', 
      BBSuperFastBBAvailable = '$superfast', 
      BBCommentary = '$bbcommentary' 
      where PostCode='".$values['PostCode']."' "; 
CustomQuery($sql4);