mysql mysql_real_escape_string() 转义问题

Question

一条查询语句 ， select orderid from order where date = 20170302 AND aid ='14218902787457024'; 因为aid字段是varchar，所以为了使用索引，在传入查询条件时，需要将aid字段值用引号包起来。

但是使用mysql_real_escape_string()后，语句变成select orderid from  order where date = 20170302 AND `aid` =\'14218902787457024\';语句不能执行。报You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '\'14218902787457024\'' at line 1  错误码是1064

Answer 1

mysql_real_escape_string是将所有带有特殊字符进行转义
下列字符受影响：
x00
n
r
\
'
"
x1a
假如你要转义，请将查询参数转义了再带入sql ，如
$aid = mysql_real_escape_string("14218902787457024");
$date = mysql_real_escape_string("20170302");
select orderid from order where date = $date AND aid ='$aid'