Hello, community! I've been working on this for the past few hours and can't seem to find the error. I think I'm in need of a pair of fresh eyes to look it over. The problem I'm having arises on the form submit. And I think it may have to do with the Photo uploads. Thank you!

HTML Code:
<form name="quiz-form" method="post" action="send_form_email.php" enctype="multipart/form-data">

<label for="first_name">First Name * </label>
<input type="text" name="first_name" maxlength="50"></br>

<label for="last_name">Last Name * </label>
<input type="text" name="last_name" maxlength="50"></br></br></br>

	<ol>
		<li>
			<label for="TorF">Question</label></br>
			<input type="radio" name="TorF1" value="True"/>True</br>
                        <input type="radio" name="TorF1" value="False"/>False
		</li></br>

		<li>
			<label for="TorF2">Question</label></br>
		        <input type="radio" name="TorF2" value="True"/>True</br>
		        <input type="radio" name="TorF2" value="False"/>False
		</li></br>

		<li><label for="uploaded_file1">Question</label></br>
		<input type="file" name="uploaded_file1" /></li></br>

		<li><label for="uploaded_file2">Question</label><br/>
		<input type="file" name="uploaded_file2" /></li></br>

		<li><label for="comments">Question</label></br>
		<textarea  name="comments" maxlength="1000" cols="30" rows="8"></textarea></li></br>
	</ol>

<label for="email">Email * </label>
<input type="text" name="email" maxlength="50"></br></br>

<p align="center"><input type="submit" value=" Submit" class="button" /></p>
</form>
PHP Code:
<?php 

    
include_once('Mail.php');
    include_once(
'Mail_Mime/mime.php');

    
$max_allowed_file_size 100// size in KB 
    
$allowed_extensions = array("jpg""jpeg""gif""bmp");
    
$upload_folder './pictures/';
    
$your_email '******@hotmail.com';

    
$errors ='';

    if(isset(
$_POST['submit'])) {

    
$name_of_uploaded_file1 =  basename($_FILES['uploaded_file1']['first_name']['last_name']);
    
$type_of_uploaded_file1 substr($name_of_uploaded_file1strrpos($name_of_uploaded_file1'.') + 1);
    
$size_of_uploaded_file1 $_FILES["uploaded_file1"]["size"]/1024;

    
$name_of_uploaded_file2 =  basename($_FILES['uploaded_file2']['first_name']['last_name']));
    
$type_of_uploaded_file2 substr($name_of_uploaded_file2strrpos($name_of_uploaded_file2'.') + 1);
    
$size_of_uploaded_file2 $_FILES["uploaded_file2"]["size"]/1024;
    

    if(empty(
$_POST['first_name'])||empty($_POST['last_name'])||empty($_POST['email']))
    {
        
$errors .= "\n First Name, Last Name, and Email are required fields. ";    
    }

    if(empty(
$_POST['TorF1'])||empty($_POST['TorF2']||empty($_POST['uploaded_file1'])||empty($_POST['uploaded_file2']))
    {
        
$errors .= "\n All questions must be answered before submitting. ";
    }

    if(
IsInjected($email))
    {
        
$errors .= "\n Bad email value!";
    }
    
    if(
$size_of_uploaded_file $max_allowed_file_size 
    {
        
$errors .= "\n Size of file should be less than $max_allowed_file_size";
    }
    
    
//------ Validate the file extension -----
    
$allowed_ext false;
    for(
$i=0$i<sizeof($allowed_extensions); $i++) 
    { 
        if(
strcasecmp($allowed_extensions[$i],$type_of_uploaded_file1) == 0)
        {
            
$allowed_ext true;        
        }
    }

    
$allowed_ext false;
    for(
$i=0$i<sizeof($allowed_extensions); $i++) 
    { 
        if(
strcasecmp($allowed_extensions[$i],$type_of_uploaded_file2) == 0)
        {
            
$allowed_ext true;        
        }
    }
    
    if(!
$allowed_ext)
    {
        
$errors .= "\n The uploaded file is not supported file type. ".
        
" Only the following file types are supported: ".implode(',',$allowed_extensions);
    }
    
    
//send the email 
    
if(empty($errors))
    {
        
//copy the temp. uploaded file to uploads folder
        
$path_of_uploaded_file1 $upload_folder $name_of_uploaded_file1;
        
$tmp_path $_FILES["uploaded_file1"]["tmp_name"];

        
$path_of_uploaded_file2 $upload_folder $name_of_uploaded_file2;
        
$tmp_path $_FILES["uploaded_file2"]["tmp_name"];
        
        if(
is_uploaded_file1($tmp_path))
        {
            if(!
copy($tmp_path,$path_of_uploaded_file1))
            {
                
$errors .= '\n error while copying the uploaded file';
            }
        }

        if(
is_uploaded_file2($tmp_path))
        {
            if(!
copy($tmp_path,$path_of_uploaded_file2))
            {
                
$errors .= '\n error while copying the uploaded file';
            }
        }
        
        
//send the email
        
$name $_POST['first_name'];
        
$surname $_POST['last_name'];
        
$TorF1 $_POST['TorF1'];
        
$TorF2 $_POST['TorF2'];
        
$visitor_email $_POST['email'];
        
$comments $_POST['comments'];
        
$to $your_email;
        
$subject="Quiz Responses";
        
$from $your_email;
        
$text "A user  $name has sent you this message:\n $user_message";
        
        
$message = new Mail_mime(); 
        
$message->setTXTBody($text); 
        
$message->addAttachment($path_of_uploaded_file1);
        
$message->addAttachment($path_of_uploaded_file2);
        
$body $message->get();
        
$extraheaders = array("From"=>$from"Subject"=>$subject,"Reply-To"=>$visitor_email);
        
$headers $message->headers($extraheaders);
        
$mail Mail::factory("mail");
        
$mail->send($to$headers$body);
    }
}

        function 
IsInjected($str)
        {
              
$injections = array('(\n+)',
                      
'(\r+)',
                      
'(\t+)',
                      
'(%0A+)',
                      
'(%0D+)',
                      
'(%08+)',
                      
'(%09+)'
                  
);
  
        
$inject join('|'$injections);
          
$inject "/$inject/i";
  
        if(
preg_match($inject,$str))
            {
                return 
true;
          }
         else
            {
                return 
false;
          }
    }
?>