salihkinali/login.php

## login.php
<?php
$action = $_GET['action'];
if($action == "login"){
ob_start();
session_start();

$username = $_POST['email'];
$password = $_POST['password'];

$sql_check = mysql_query("select * from users where mail='".$username."' and password='".$password."' ") or die(mysql_error());

if(mysql_num_rows($sql_check))  {
    $_SESSION["login"] = "true";
    $_SESSION["username"] = $username;
    $_SESSION["password"] = $password;
   echo ' <meta http-equiv="refresh" content="0;url=dashboard.php">';

}
else {
    if($username=="" or $password=="") {
        echo "<center>Lutfen kullanici adi ya da sifreyi bos birakmayiniz..! <a href=javascript:history.back(-1)>Geri Don</a></center>";
    }
    else {
        echo "<center>Kullanici Adi/Sifre Yanlis.<br><a href=javascript:history.back(-1)>Geri Don</a></center>";
    }
}

ob_end_flush();
}else{
?>
	<?php
	$action = $_GET['action'];
	if($action == "login"){
	ob_start();
	session_start();

	$username = $_POST['email'];
	$password = $_POST['password'];

	$sql_check = mysql_query("select * from users where mail='".$username."' and password='".$password."' ") or die(mysql_error());

	if(mysql_num_rows($sql_check)) {
	$_SESSION["login"] = "true";
	$_SESSION["username"] = $username;
	$_SESSION["password"] = $password;
	echo ' <meta http-equiv="refresh" content="0;url=dashboard.php">';

	}
	else {
	if($username=="" or $password=="") {
	echo "<center>Lutfen kullanici adi ya da sifreyi bos birakmayiniz..! <a href=javascript:history.back(-1)>Geri Don</a></center>";
	}
	else {
	echo "<center>Kullanici Adi/Sifre Yanlis.<br><a href=javascript:history.back(-1)>Geri Don</a></center>";
	}
	}

	ob_end_flush();
	}else{
	?>