多列PHP MySQL更新集查询 [英] PHP MySQL Update Set query with Multiple columns

问题描述

我已经使用逗号和"AND"语句尝试了此查询，如下图所示.我收到语法错误

I've tried this query with both commas and "AND" statements as pictured below. I get a syntax error

出了点问题.您的SQL语法有误.检查与您的MySQL服务器版本相对应的手册以获取正确的语法，以在第1行的'are available 24/7 by phone and email to answer any questions and to assist you '附近使用

每次我尝试以下查询:

$sql = mysql_query("UPDATE general
    SET bookabandheading = $_POST[bookabandheading 
    AND bookaband = $_POST[bookaband]
    AND contactus = $_POST[contactus]
    AND aboutuslisten = $_POST[aboutuslisten]
    AND contactusheading = $_POST[contactusheading]
    AND nightclubsheading = $_POST[nightclubsheading]
    AND acousticheading = $_POST[acousticheading]
    AND schoolsheading = $_POST[schoolsheading]
    AND privateheading = $_POST[privateheading]
    AND concertsheading = $_POST[concertsheading]
    AND festivalsheading = $_POST[festivalsheading]
    AND submissions = $_POST[submissions]
    AND interns = $_POST[interns]
    AND managementbio = $_POST[managementbio]
    AND latestnews = $_POST[latestnews]
    AND artistofthemonth = $_POST[artistofthemonth]
    AND artistofthemonthphoto = $_POST[artistofthemonthphoto]
    AND artistofthemonthid = $_POST[artistofthemonthid]
    AND listentoourartists = $_POST[listentoourartists]
    AND musicianswanted = $_POST[musicianswanted]
    AND aboutus = $_POST[aboutus]
    AND bshowcases = $_POST[bshowcases]
    AND bandavails = $_POST[bandavails]");

该查询在另一个VPS上的其他数据库中工作，但是我只是迁移了服务器，因此不再起作用.非常感谢您的帮助！

The query worked in a different database on another VPS, but I just migrated servers and it no longer works. Any help is greatly appeciated!

推荐答案

虽然主要问题是您在bookamandheading之后错过了右括号，但我还是建议您重构此请求，例如:

While the main problem is that you missed the closing bracket after bookamandheading, still I would like to advise you to refactor this request for example like this:

$keys = array("bookabandheading", "bookaband", "contactus", "aboutuslisten",
              "contactusheading", "nightclubsheading", "acousticheading",
              "schoolsheading", "privateheading", "concertsheading",
              "festivalsheading", "submissions", "interns", "managementbio",
              "latestnews", "artistofthemonth", "artistofthemonthphoto",
              "artistofthemonthid", "listentoourartists", "musicianswanted",
              "aboutus", "bshowcases", "bandavails");
$set = array();
foreach ($keys as $key) {
    $set[] = sprintf(" %s = '%s' ", $key, mysql_escape_string($_POST[$key]));
}
$sql = mysql_query("UPDATE general SET " . implode(", ", $set));

通过转义输入，维护起来更容易，安全性也更高.

It is much easier to maintain and also a bit more secure by escaping the input.

更新:添加where语句示例

Update: add where statement example

$where = array();
$where[] = sprintf(" some_string = '%s' ", mysql_escape_string($some_string));
$where[] = sprintf(" some_integer = %d ", $some_integer);
$where = " WHERE " . implode(" AND ", $where);
$sql = mysql_query("UPDATE general SET " . implode(", ", $set) . " " . $where);

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