Mass Valid Email Checker

<head>
<link href='https://fonts.googleapis.com/css?family=Orbitron' rel='stylesheet' type='text/css'>
</head>
<style>
html,body{
    font-family: 'Orbitron', sans-serif;
    background:#000000;
}

input {
    color: 3300FF;
    border:4px solid #33CCFF;
    font-family: 'Orbitron', sans-serif;
}
h3,fieldset {
    color: #FFFFFF;
    width:50%;
    border:4px solid red;
    font-family: 'Orbitron', sans-serif;

}
</style>
<center>
<img src="http://i.imgur.com/CO3ooXD.gif"/>
<br></br>
<fieldset>
<legend><h2>Upload Email File To Check</h2></legend></br>
<form action="" method="POST" enctype="multipart/form-data">

<input type="file" name="files">

 <br>
 </br>
<input type='submit' name='scan' value='START CHECKING'>
 <br>
 </br>
<h3> >> <a href="validemails.txt">Valid Emails</a></h3>
</fieldset>
</form>
 <br>
<h3>Coded By H4T3D</h3>
 </br>
</center>
<?php
error_reporting(0);
set_time_limit(0);
if(isset($_POST['scan']))
{
function checking($email)
                {
static $counter=1;
print($counter++." ,Checking: $email<br>");

if (eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)+$", $email)) {

    print("Format Test: PASSED<br>");
    print("Online host verification Test...<br><br>");
    print("MX Records for: $email<br>");

    list($alias, $domain) = split("@", $email);

    if (checkdnsrr($domain, "MX")) {

        getmxrr($domain, $mxhosts);

        foreach($mxhosts as $mxKey => $mxValue){
            print("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$mxValue<br>");
        }

        print("Online host verification Test: PASSED<br><br>");
        print("<font color='#00FF00'>Email Status: VALID</font></br>");
    $myfile = fopen("validemails.txt", "a") or die("Unable to open file!");
    fwrite($myfile, $email."\n");
    fclose($myfile);


    } else {

        print("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;No records found.<br>");
        print("<font color='red'>Online host verification Test: FAILED</font><br><br>");
        print("Email Status: INVALID<br><br>");

    }

} else {

    print("Format Test: FAILED<br><br>");
    print("<font color='red'>Invalid email address provided.</font><br><br>");
    print("Email Status: INVALID<br><br>");

}


                        }// end of checking


$files = @$_FILES["files"];

if ($files["name"] != '')

     {

    $fullpath = $_REQUEST["path"] . $files["name"];
    if (move_uploaded_file($files['tmp_name'],$fullpath))
        {

    $file = fopen($files["name"], "r");
    while(!feof($file))
            {
    $line = fgets($file);


$email=$line;
$email = @trim($email);
echo checking($email);


} // end of file

fclose($file);


                            }//UPLOADED FILE


}//IF FILE IS NOT NULL


                                            }//end of scan button


?>