php - MySQL 查询从表中获取主键（customer_id）并将其与当前会话 id（customer_id）进行比较

Question

我在运行此代码时遇到此错误。

解析错误：语法错误，第 32 行 C:\xampp\htdocs\pta\cc11205\booking.php 中的意外 '" "' (T_CONSTANT_ENCAPSED_STRING)

 $querycust = mysql_query(" SELECT * FROM customer WHERE customer_id = ".$_SESSION['customer_id']" ");

tq。

score 0 · Accepted Answer

0

逃避你的报价。

" SELECT * FROM customer WHERE customer_id = \".$_SESSION['customer_id']\" "

于 2013-05-11T19:12:12.827 回答

score 0 · Accepted Answer

您的查询中有语法错误，请将您的查询更改为此

$querycust = mysql_query(" SELECT * FROM customer WHERE customer_id = '".$_SESSION['customer_id']."' ");

score 0 · Accepted Answer

您在字符串中缺少连接符号。为清楚起见，我宁愿将视线存储在变量中，例如

$session_var = $_SESSION['customer_id'];
$querycust = mysql_query(" SELECT * FROM customer WHERE customer_id = $session_var");

还考虑使用PDO或MySQLI扩展来防止SQL Injection.

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