php error fopen(): Filename cannot be empty in - php

Question

Send email with attachment code was working fine recently we have transfer the file to another hosting server idk what happen it display the below error,
Warning: fopen(): Filename cannot be empty in /home/hugerecruitmetnt/public_html/validatecva.php on line 106
Warning: fread() expects parameter 1 to be resource, boolean given in /home/hugerecruitmetnt/public_html/validatecva.php on line 107
Warning: fclose() expects parameter 1 to be resource, boolean given in /home/hugerecruitmetnt/public_html/validatecva.php on line 148
Warning: Cannot modify header information - headers already sent by (output started at /home/hugerecruitmetnt/public_html/validatecva.php:106) in /home/hugerecruitmetnt/public_html/validatecva.php on line 150
<?php
$name = $_POST['fname'];
$initial = $_POST['mname'];
$surname = $_POST['lname'];
$gender = $_POST['gender'];
$dob = $_POST['dob'];
$nationality = $_POST['nationality'];
$address = $_POST['fulladdress'];
$passport = $_POST['passportno'];
$passexpiry = $_POST['passexpiry'];
$mobile = $_POST['mobile'];
$email_address = $_POST['email'];
$filename=$_FILES["newfile"]["name"];
$filetype=$_FILES["newfile"]["type"];
$filesize=$_FILES["newfile"]["size"];
$filetemp=$_FILES["newfile"]["tmp_name"];
if($filetype=="application/octet-stream" or $filetype=="text/plain" or $filetype=="application/msword" or $filetype=="application/zip" or $filetype=="application/pdf" or $filetype=="application/vnd.openxmlformats-officedocument.wordprocessingml.document")
{
$message= '<table cellspacing="0" cellpadding="8" border="0" width="400">
<tr>
<td colspan="2"></td>
</tr>
<tr bgcolor="#eeeeee">
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Name</strong></td>
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$fname.' '.$initial.' '.$surname.'</td>
</tr>
<tr><td colspan="2" style="padding:0px;"><img src="images/whitespace.gif" alt="" width="100%" height="1" /></td></tr>
<tr bgcolor="#eeeeee">
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Gender</strong></td>
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$gender.'</td>
</tr>
<tr><td colspan="2" style="padding:0px;"><img src="images/whitespace.gif" alt="" width="100%" height="1" /></td></tr>
<tr bgcolor="#eeeeee">
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Date Of Birth</strong></td>
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$dob.'</td>
</tr>
<tr><td colspan="2" style="padding:0px;"><img src="images/whitespace.gif" alt="" width="100%" height="1" /></td></tr>
<tr bgcolor="#eeeeee">
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>nationality</strong></td>
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$nationality.'</td>
</tr>
<tr><td colspan="2" style="padding:0px;"><img src="images/whitespace.gif" alt="" width="100%" height="1" /></td></tr>
<tr bgcolor="#eeeeee">
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Address</strong></td>
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$fulladdress.'</td>
</tr>
<tr bgcolor="#eeeeee">
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Passport No</strong></td>
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$passportno.'</td>
</tr>
<tr bgcolor="#eeeeee">
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Passport Expiry</strong></td>
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$passexpiry.'</td>
</tr>
<tr><td colspan="2" style="padding:0px;"><img src="images/whitespace.gif" alt="" width="100%" height="1" /></td></tr>
<tr bgcolor="#eeeeee">
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Email</strong></td>
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$email.'</td>
</tr>
<tr><td colspan="2" style="padding:0px;"><img src="images/whitespace.gif" alt="" width="100%" height="1" /></td></tr>
<tr bgcolor="#eeeeee">
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Mobile</strong></td>
<td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$mobile.'</td>
</tr>
<tr><td colspan="2" style="padding:0px;"><img src="images/whitespace.gif" alt="" width="100%" height="1" /></td></tr>
</table>
';
// MAIL SUBJECT
$subject = "Posted CV From ";
// TO MAIL ADDRESS
$to = 'email#email.com';
/*
// MAIL HEADERS
$headers = "MIME-Version: 1.0\n";
$headers .= "Content-type: text/html; charset=iso-8859-1\n";
$headers .= "From: Name <name#name.com>\n";
*/
// MAIL HEADERS with attachment
$fp = fopen( $newfile, "rb");
$file = fread($fp, $newfile_size);
$file = chunk_split(base64_encode($file));
$num = md5(time());
//Normal headers
$headers = "From: $name<$email>\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: multipart/mixed; ";
$headers .= "boundary=".$num."\r\n";
$headers .= "--$num\r\n";
// This two steps to help avoid spam
$headers .= "Message-ID: <".$now." TheSystem#".$_SERVER['SERVER_NAME'].">\r\n";
$headers .= "X-Mailer: PHP v".phpversion()."\r\n";
// With message
$headers .= "Content-Type: text/html; charset=iso-8859-1\r\n";
$headers .= "Content-Transfer-Encoding: 8bit\r\n";
$headers .= "".$message."\n";
$headers .= "--".$num."\n";
// Attachment headers
$headers .= "Content-Type:".$newfile_type." ";
$headers .= "name=\"".$newfile_name."\"r\n";
$headers .= "Content-Transfer-Encoding: base64\r\n";
$headers .= "Content-Disposition: attachment; ";
$headers .= "filename=\"".$newfile_name."\"\r\n\n";
$headers .= "".$file."\r\n";
$headers .= "--".$num."--";
// SEND MAIL
#mail($to, $subject, $message, $headers);
fclose($fp);
header('Location: thankscv.php');
}
else
{
echo '<font style="font-family:Verdana, Arial; font-size:11px; color:#F3363F; font-weight:bold">Wrong file format. Mail was not sent.</font>';
//echo "<script>window.location.href='careers.html';</script>";
}

Answer 1

Problem Solved
to hide the warning just use "#"
ex: #fopen, #fread, #fclose
Phew 3hrs wasted to solve this warning

Answer 2

Default size of uploading temp file is 2mb
Increase Size By
upload_max_filesize=2M
TO
upload_max_filesize=100M
in php.ini xampp, and after that restart xampp. I hope you will not get any errors and that the file will be read also.