[PHP] php連mySQL 資料庫

$host="localhost"; // Host name

$username="emmuser"; // Mysql username

$password="emmpass"; // Mysql password

$db_name="emmuser"; // Database name

$tbl_name="userID"; // Table name

// Connect to server and select databse.

mysql_connect("$host", "$username", "$password")or die("cannot connect");

mysql_select_db("$db_name")or die("cannot select DB");

// To protect MySQL injection (more detail about MySQL injection)

$myusername = $login_username;

$mypassword = $secretkey;

$myusername = stripslashes($myusername);

$mypassword = stripslashes($mypassword);

$myusername = mysql_real_escape_string($myusername);

$mypassword = mysql_real_escape_string($mypassword);

$sql="SELECT IDnumber FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";

$result=mysql_query($sql);

// Mysql_num_row is counting table row

$count=mysql_num_rows($result);

// If result matched $myusername and $mypassword, table row must be 1 row

if($count==1){

// Register $myusername, $mypassword and redirect to file "login_success.php"

$row = mysql_fetch_array($result)

$login_username= $row['username'];

}