PHP / SQL登录表单 - 如何检查数据库中的密码

at the moment, i check the username and passwort of a HTML form like this on my database:

$exc = $dbh->prepare("SELECT id, cid, fullname FROM user WHERE username LIKE :username AND password LIKE :password");

I need to check both CASE SENSITIVE when executing the query.

Database data:

username: louis
password: goal43

Form data:

username: LOUIS
password: GOAL43

returns true - how do i fix this ?

$exc = $dbh->prepare("SELECT id, cid, fullname FROM user WHERE BINARY username LIKE :username AND BINARY password LIKE :password");

I hope it helps you. The link I've given to you

You have written query in prepare. Next step to assign parameters to :username and :password parameter you can do the by bindParam(). Which is given below.

$stmt = $dbh->prepare("SELECT id, cid, fullname FROM user WHERE username = :username AND password = :password");
$stmt->bindParam(':username ', $username);
$stmt->bindParam(':password', $password);
$stmt->execute();

just use = instead of LIKE

LIKE is case-insensitive

This question is already asked and contains answer , you can see this link there are very good answers for your query Compare string with case sensitive data