สอบถามเรื่องการติดต่อกับฐานข้อมูลบน host จริง คืออัพฐานข้อมูลขึ้นได้แล้ว แต่รันหน้าเพจมันบอกว่าเชื่อมต่อฐานข้อมูลไม่ได้ค่ะ

<?
	$host = "localhost";
	$user = "root";
	$pw = "44-101104";
	$dbname = "sahachartgdb";
	mysql_query("set NAMES utf8");
	$link=mysql_connect($host,$user,$pw,$dbname);
	if(!$link)
	{
		echo "<h3> ERROR : ไม่สามารถติดต่อฐานข้อมูลได้ </h3>";
		exit();
	}	
	
	
?>

<?php
						if(!$login || $tryagain=="yes")
						{
						
					?>
                    <form action="checkLogin.php" method="post" name="frmLogin" onSubmit="JavaScript:return fncSubmit();">
                    <table width="615px" border="0" cellpadding="0" cellspacing="0"><tr><td>
                   <center>
                 
                    <table border="0" cellpadding="0" cellspacing="0"  >                    
                    	<tr>
                        	<td>
                            	<center>
                             		<table width="399px" border="0" cellpadding="0" cellspacing="0" style="background:url(../images/bglogin.png);">
                                    	<tr><th colspan="2" id="c"><br /></th></tr>
                                        <tr><th colspan="2" id="c"><br /><br /><br /><br /><br /><br /></th></tr>
                        				<tr height="35px">
                            				<th width="150px" ><font color="#0000FF">USERNAME :</font></th><td><input type="text" name="user_name"  /></td>                                
                            			</tr>
                            			<tr height="30px">
                            				<th><font color="#0000FF">PASSWORD :</font></th><td><input type="password" name="psw"  /></td>                                
                            			</tr>
                                        <tr><th colspan="2" ><input type="submit" value="Login" name="login" />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</th></tr>
                                        <tr><th colspan="2" id="c"><br /><br /></th></tr>
                                         <tr><th colspan="2" id="c"><br /><br /></th></tr>
                        			</table>
                            	</center>
                            </td>
                        </tr>
                    </table>  
                    </center> 
                     </td></tr></table>                 	
                    </form>
                    <?php
					}
					?>

<?php
	ob_start();
	session_start();
	echo "$user_name <br>$psw<br>";
	include "connect.php";
	echo "user=$user pass = $pw ";
	$sql = "select * from hrlogin where username='$user_name' and password = '$psw'";
	$result = mysql_db_query($dbname,$sql);
	$dbarr = mysql_fetch_array($result);
	if($dbarr)
	{
		$login = "yes";
		$u_name = $dbarr[username];
		session_register("login","u_name");
		header("location:ApplicationAll.php");
	}
	else
	{		
		echo "<script type=\"text/javascript\">alert('username or password is not correct please tryagain!') </script>";
		$tryagain = "yes";
		include "Login_hr.php";
	}
?>