select子句中的MYSQL错误1064

Question

由于我是初学者所以我在此查询中遇到语法错误。

$SQL = "SELECT * FROM registration WHERE email = ".$email." AND password = ".$password."";

Answer 1

您的查询语法有误。尝试将其更改为

$SQL = "SELECT * FROM registration WHERE email='".$email."' AND password='".$password."'";

Answer 2

将单引号添加到值字段

$SQL = "SELECT * FROM registration
           WHERE email = '".$email."' AND password ='".$password."'";

Answer 3

你应该在变量之前和之后加上单引号。

$SQL = "SELECT * FROM registration WHERE email = '".$email."' AND password = '".$password."'";

Answer 4

$SQL = "SELECT * FROM registration WHERE email='$email' AND password='$password'";

试试这个..

Answer 5

您传递的是字符串，字符串应该用单引号括起来。试试这个 -

$SQL = "SELECT * FROM registration WHERE email = '".$email."' AND password = '".$password."'";

Answer 6

请尝试这个，你应该使用单引号。

$SQL = "SELECT * FROM registration WHERE email = '".$email."' AND password = '".$password."'";