php - php 查询错误

Question

它说我的语法有错误，我似乎找不到错误。

$query_admin = 'SELECT * FROM `user_accounts` WHERE `id` =1 AND `name` LIKE ' . $login_user_name . ' AND `password` LIKE ' . $login_password . ';
    $query_user = 'SELECT * FROM `user_accounts` WHERE `name` LIKE ' . $login_user_name . ' AND `password` LIKE ' . $login_password . ';

Answer 1

尝试一下，我认为您忘记将 ' 放在查询字符串的末尾:

$query_admin = "SELECT * FROM `user_accounts` WHERE `id` =1 AND `name` LIKE '$login_user_name' AND `password` LIKE ' $login_password'";
$query_user = "SELECT * FROM `user_accounts` WHERE `name` LIKE '$login_user_name ' AND `password` LIKE '$login_password' ";

或者这个:

$query_admin = "SELECT * FROM `user_accounts` WHERE `id` =1 AND `name` LIKE {$login_user_name} AND `password` LIKE {$login_password}";
$query_user = "SELECT * FROM `user_accounts` WHERE `name` LIKE {$login_user_name} AND `password` LIKE {$login_password}";