**当有人登录详细信息并且如果用户在该数据库中时,我如何检查数据库,那么它将允许他/她访问下一页,否则它将回显错误?
<form action="profile_student.php" method="post" enctype="multipart/form-data">
<p> <input type="text" name="user_login" placeholder="Email" required/></p>
<p><input type="password" name="user_pass" placeholder="Password" required/> </p>
<input type="submit" name="login_submit" value="Log In"/>
</form>
</div>
***
**<?php
//log in variables
$login_user = @strip_tags($_POST['user_login']);
$login_password = @strip_tags($_POST['user_pass']);
$login_submit = ($_POST['login_submit']);
if ($login_submit){
$login_query = mysqli_query ($connect,"SELECT * FROM users WHERE e-mail = '$login_user' AND password = '$login_password'");
// mae the query, now we check if the user exists
$check_user = mysqli_num_rows ($login_query);
if ($check_user == 1) {
// if there is a valid user in the db, if the results returned are one row, then log the user in, otherwise error
// we need to create to session variables for user so the user can log in, save details etc.
$_SESSION["user_login"]=$login_submit;
header("Location: profile_student.php");
echo "logged in";
}
?>**