When I am trying to execute my PHP code below, I am getting a fatal error “call to undefined function mysql_query()” and don’t know how to resolve it.
<?php
$user = 'root';
$password = 'root';
$db = 'inventory';
$host = 'localhost';
$port = 8888;
$link = mysqli_init();
$success = mysqli_real_connect(
$link,
$host,
$user,
$password,
$db,
$port
);
?>
<?php
$username = $_POST['username'];
$password = $_POST['password'];
$sql = mysql_query("SELECT * FROM login WHERE username = '".$_POST['username']."' and password = '".md5($_POST['password'])."'");
$row = mysql_num_rows($sql);
if($rom > 0 )
{
session_start();
$_SESSION['username'] = $_POST['username'];
$_SESSION['password'] = $_POST['password'];
echo "login done";
}else {
echo "fail login ";
}
?>
The Error
PHP Fatal error: Uncaught Error: Call to undefined function mysql_query() in /Applications/MAMP/htdocs/lprapp/config.php:23 Stack trace:#0 {main} thrown in /Applications/MAMP/htdocs/lprapp/config.php on line 23
You are mixing mysql and mysqli
Change these lines:
$sql = mysql_query("SELECT * FROM login WHERE username = '".$_POST['username']."' and password = '".md5($_POST['password'])."'");
$row = mysql_num_rows($sql);
to
$sql = mysqli_query($success, "SELECT * FROM login WHERE username = '".$_POST['username']."' and password = '".md5($_POST['password'])."'");
$row = mysqli_num_rows($sql);