Bonjour aide moi svp avec ce code

mon site :http://tvhitpro.ga/login.php Nom:admin Mot passe: admin @ 123

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Warning: mysql_fetch_array() expects parameter 1 to be resource, boolean given in /home/vol15_4/xtreemhost.com/xth_21675441/htdocs/login.php on line 7

Voir code sur l'image





Code login


<?php
include("include/conf.php");

if(isset($_POST['submit']))
{
$query = mysql_query("select * from admin_login where username='".$_POST['username']."' and password='".$_POST['password']."'");
while($check_row=mysql_fetch_array($query))
{
$_SESSION['admin_login_status']="1";
$_SESSION['admin_id']=$check_row['id'];
$_SESSION['admin_name']=$check_row['user_name'];
echo "<script language='javascript'>window.location='manage_banner.php';</script>";
die();
}
}


?>
<title>Welcome to Control Panel</title>
<link rel="stylesheet" href="css/admin.css" type="text/css" />

<form name="frmLogin" action="" method="post">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td align="center" class="texttitle">

</td>

</tr>
</table>

<table align="center" width="25%" cellpadding="2" cellspacing="0" border="0" class="even_row_border">
<tr>
<td colspan="3" class="field_row" style="height:30px" align="center">Administrator login</td>
</tr>
<tr class="odd_row">
<td class="detaild">User Name</td>
<td>:</td>

<td class="detaild"><input type="text" name="username"></td>
</tr>
<tr class="odd_row">
<td class="detaild">Password</td>
<td>:</td>
<td class="detaild"><input type="password" name="password"></td>
</tr>
<tr class="odd_row">
<td colspan="3" align="center">
<input type="hidden" name="session_uniq_id" value="<?php echo $_SESSION['session_uniq_id']; ?>">
<input type="submit" name="submit" value="Login">
</td>
</tr>
</table>
</form>
</body>
</head>