The Uploader class is a simple php script that makes file uploads a bit easier.

Uploader.php

/**
 * 
 * The Uploader class is a simple php script that makes file 
 * uploads a bit easier.
 * @author Junaid Qadir Baloch (shekhanzai.baloch@gmail.com)
 * @version 0.1 10:18 PM 7/30/2011
 * 
 */
class Uploader
{
	private $allowedFileTypes;
	private $maxFileSize = 1048576;
	private $fileInputBoxName;
	private $fileName;
	private $fileType;
	private $fileTmpName;
	private $fileError;
	private $fileSize;
	private $uploadPath;
	function __construct($fileInputBoxName, $uploadPath = "uploads", $allowedFileTypes)
	{
		
		if (is_array ( $allowedFileTypes ))
		{
			$this->allowedFileTypes = $allowedFileTypes;
		} else
		{
			$this->allowedFileTypes [] = $allowedFileTypes;
		}
		
		$this->uploadPath = $uploadPath;
		$this->fileInputBoxName = $fileInputBoxName;
	}
	
	/**
	 * 
	 * @return array
	 */
	public function upload()
	{
		ini_set ( "file_uploads", "On" );
		
		$name = $_FILES [$this->fileInputBoxName] ["name"];
		$type = $_FILES [$this->fileInputBoxName] ["type"];
		$tmp = $_FILES [$this->fileInputBoxName] ["tmp_name"];
		$error = $_FILES [$this->fileInputBoxName] ["error"];
		$size = $_FILES [$this->fileInputBoxName] ["size"];
		$maxFileSize = $this->maxFileSize;
		if ($size > $maxFileSize)
		{
			$error = 2;
		}
		if ($error == 0)
		{
			if (in_array ( $type, $this->allowedFileTypes )) //== "application/msword" or $type == "application/vnd.openxmlformats-officedocument.wordprocessingml.document" or $type == "application/pdf")
			{
				$uploadsPath = realpath ( $this->uploadPath );
				$timeStamp=time();
				$name=$timeStamp."_".$name;
				if (copy ( $tmp, $uploadsPath . DIRECTORY_SEPARATOR . $name ))
				{
					$retArray [uploadAction] = array (
						
						status => "Success", 
						message => "", 
						contentType => $type, 
						fileName => $name, 
						filePath => $uploadsPath . DIRECTORY_SEPARATOR . $name 
					);
					return $retArray;
				}
			} else
			{
				$retArray [uploadAction] = array (
					
					status => "Error", 
					message => "Selected file type is not allowed." 
				);
				return $retArray;
			}
		} elseif ($error == 2)
		{
			$fz = $this->maxFileSize * 1024 * 1024;
			$retArray [uploadAction] = array (
				
				status => "Error", 
				
				message => "The uploaded file exceeds the maximum allowed size ({$fz} MB)." 
			);
			return $retArray;
		}
	}
}