PHP在url中获取用户ID

Question

Im very new to PHP, so I have a bit of a challenge here. Right now, im trying to get the specific user id in the url, so its possible for me to change content according to what user that is logged in. (Showing different profile texts, names, ages and such)

I have tried this: header("Location: profile.php?id=$id"); but it dosent seem to work.

<?php
session_start();

if(isset($_SESSION['usr_id'])!="") {
    header("Location: index.php");
}

include_once 'dbconnect.php';

//check if form is submitted
if (isset($_POST['login'])) {

    $email = mysqli_real_escape_string($con, $_POST['email']);
    $password = mysqli_real_escape_string($con, $_POST['password']);
    $result = mysqli_query($con, "SELECT * FROM users WHERE email = '" .     $email. "' and password = '" . md5($password) . "'");

    if ($row = mysqli_fetch_array($result)) {
        $_SESSION['usr_id'] = $row['id'];
        $_SESSION['usr_name'] = $row['name'];
        header("Location: profile.php?id=$id");
    } else {
        $errormsg = "Incorrect Email or Password!!!";
    }
}
?>

Answer 1

change your code from

header("Location: profile.php?id=$id");

to

header("Location: profile.php?id=" . $row['id']);