php 5.5 and PDO login error

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Dear user!
i am using php 5.5 and pdo. the error i face is the login script...
i am using the new feature of php 5.5 password_hash() and password_verify(). the password_hash() wored fine but the password_verify() are not working,, don,t know why?
i search a lot and post on many forum about this issue but no one will be able to solve it...
below is my login code...

Login.php

PHP

<?php session_start();

include 'conn.php';

if(isset($_POST) && count($_POST)>0)
{

        $user   = $_POST['user'];
        $pass   = $_POST['pass'];
       $option=array('cost'=>12);
       $hash=password_hash($pass,PASSWORD_BCRYPT,$option);
   // $secure=hash('sha512',$pass);

    $query  ="SELECT * FROM signup WHERE Username=:users AND Password=:pass";
        $result = $conn->prepare($query);
       $result->execute(array(':users' => $user,':pass' => $hash));
   $res=$result->fetch(PDO::FETCH_ASSOC);
    //    if($res>0)
      if(password_verify($pass,$hash))
        {

        // Set username session variable
            $_SESSION['user'] = $user;
            // Jump to secured page
            header('location:index.php');
        }
        //endif
    else
    {
        header('Location:signin.php');
    }
}
     else

     {
     echo PDO::ERRMODE_EXCEPTION;
     
}
?>

if i use the hash('algo',$variable) insted of the password_hash() and password_verify() function then the code work fine.. the main thing is that the these two function are not working properly....

Posted 30-Apr-14 6:33am

msz900

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msz900 · Accepted Answer · 2014-08-01T09:17:00

i got it....

The Update code is....

PHP

   include 'connection.php';
try
{
$user=$_POST['user'];
$pass=$_POST['password'];
$secpss=password_hash($pass,PASSWORD_DEFAULT);
$smt=$conn->prepare("SELECT * FROM user WHERE User='$user'");
$smt->execute();
$result=$smt->fetch(PDO::FETCH_OBJ);
$prev=$result->Password;
if(password_verify($pass,$prev))
{
    header('location:welcome.php');
}
else
{
    header('location:signin.php');
}
}
catch(ErrorException $e)
{
    $e->getMessage();
}
?>

this is the correct process,, and the main thing is that mostly we could make a simple mistake like coma(,) or data base column length. In my case i thing that i could provide a correct length of password but accedntly it was a short length, i correct it and follow the php 5.5 documentation and the problem is solved..
By the way thanks all of your replay...