多列PHP MySQL更新集查询

Question

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

出问题了。您的SQL语法有误。 查看与您的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'are available 24/7 by phone and email to answer any questions and to assist you '在'are available 24/7 by phone and email to answer any questions and to assist you '附近使用

每次我尝试此查询：

$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上的不同数据库中工作，但是我只是迁移了服务器，因此不再起作用。 非常感谢任何帮助！

Answer 1

尽管主要问题是您在bookamandheading之后错过了右括号，但我还是建议您重构该请求，例如：

$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，维护起来容易得多，并且安全性也更高。

更新：添加where语句示例

$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);

Answer 2

我认为这有3件事是错误的：

• 查询中的原始POST数据-至少用户mysql_real_escape_string
• 参数看起来像字符串，因此应该在它们周围加上引号
• 没有WHERE选项，因此您将更新该表中的每一行

Answer 3

您有一些错误：

• 语法错误。 更改

  $ _POST [bookabandheading到$ _POST [bookabandheading]

• 这也极容易发生SQL注入。 您应该使用mysqli，但是如果在mysql上进行了设置（从5.5.0版开始不推荐使用），则应使用mysql_real_escape_string（）来转义每个$ _POST变量。

• 每个$ _POST变量都需要使用引号将其参数化。 举个例子：

  $ _POST ['bookabandheading'] （对所有$ _POST变量都执行此操作）

Answer 4

$_POST[bookabandheading

改成

$_POST[bookabandheading]