<?php

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Written by : Ahmed Selim Refaat (Mr.Ajax)
TODO : Uploading files in easy steps

Instructions : 
	$upload = new file_upload("upl");
		##>Used to define the $_FILES name parameter (if form upload box named "upl" so uploading process var. will be $_FILES[upl] and here in class will named "upl" only).
	$upload->file_prefix = "pict";
		##>Put prefix before file name.
	$upload->safe_name = TRUE;
		##>change any spaces to "_" ,initially true.
	$upload->max_file_size
		##>Specify maximum file size.
	$upload->dirname
		##>dirname of being uploaded to
	$upload->filename
		##>Specify file name without random generation or using prefix
	$upload->rename_rand
		##>Specify it to true to make class to generate random file name
	$upload->allowed_mime_types
		##>Specify allowed mime types to be uploaded
	$upload->blacklist_ext
		##>Black list extensions that forbidden to be uploaded	
	echo $upload->upload_process();
		##>perform final uploading process.
		
After uploading process it return array contining these information 
	[0]File Name
	[1]Dir Name
	[2]File Size
	[3]File Type
	[4]Extension
	[5]Original Name
	[6]File Path
************************************************************************/
	
class safe_upload
{	
	var $uploadinput ;
	var $dirname = "users_pic/";
	var $chmod = "0777";
	var $safe_name = true ;
	var $max_file_size ;
	var $file_prefix ;
	var $filename ;
	var $filesize ;
	var $filetype ;
	var $file_tmp ;
	var $file_err ;
	var $file_ext ;
	var $upload_error ;
	var $rename_rand ;
	var $rename_to ;
	var $allowed_mime_types = array('image/jpeg', 'image/png', 'image/gif', 'image/tiff');
	var $blacklist_ext = array("php","php3","php4","php5","php6","phtml");
	
	function __construct($uploadinput){

		$this->original_name = $_FILES[$uploadinput]['name'];
	    $this->filesize = $_FILES[$uploadinput]['size'];
	    $this->filetype = $_FILES[$uploadinput]['type'];
	    $this->file_tmp = $_FILES[$uploadinput]['tmp_name'];
	    $this->file_err = $_FILES[$uploadinput]['error'];
		$this->file_ext = substr($this->original_name, strrpos($this->original_name, '.') + 1);
		
		
		foreach ($this->blacklist_ext as $item) {
			if(preg_match("/$item\$/i",$this->original_name)) {
                 @unlink($this->file_tmp);
                 $this->upload_error = "Unsupported file types to upload";
			}
		}
		
		if (!file_exists($this->dirname)){
             if (!mkdir($this->dirname, $this->chmod)){
                 @unlink($this->file_tmp);
                 $this->upload_error = "Folder not exist and cannot make it";
             }
        }
        
        if($this->max_file_size){
			if($this->filesize > $this->max_file_size){
                 @unlink($this->file_tmp);
                 $this->upload_error = "Exceeded the maxumun file size";				
			}
		}
        
		if($this->filesize == 0){
            @unlink($this->file_tmp);
 			$this->upload_error = "Error in File: 0 byte";			
		}  
          
		if($this->file_err){
			switch ($this->file_err){
	            case '0':
		            @unlink($this->file_tmp);
		 			$this->upload_error = "Error in File: 0 byte";			
	                break;
	
	            case '1':
		            @unlink($this->file_tmp);
		 			$this->upload_error = "Exceeded server maximum upload size in $this->filesize";
	                break;
	
	            case '2':
		            @unlink($this->file_tmp);
		 			$this->upload_error = "Exceeded the maxumun file size";
	                break;
	
	            case '3':
		            @unlink($this->file_tmp);
		 			$this->upload_error = "Error in uploading process maybe of connection or error occured during uploading";			
	                break;
	
	            case '4':
		            @unlink($this->file_tmp);
		 			$this->upload_error = "Nothing selected to upload - Go back";
	                break;
      		}
			
		} 
          
		if (!$this->file_ext)
        {
            @unlink($this->file_tmp);
 			$this->upload_error = "file must have an extension";
       	}
		
		if($this->mime_check()==false){
			@unlink($this->file_tmp);
			$this->upload_error = "mime type error";
		}

		if($this->ext_check()==false){
            @unlink($this->file_tmp);
			$this->upload_error = "mime type error";
		}		
	}
	
	function filename_without_ext($filename){
	    $pos = strripos($filename, '.');
	    if($pos === false){
	        return $filename;
	    }else{
	        return substr($filename, 0, $pos);
	    }
	}

	function up_file_name($counter=0){
		
		$TEMP = $this->file_prefix;
	    if($this->rename_rand){
	    	$TEMP .= rand(56461654648976,56461654648976546);
		}else{
			$name_without_ext = $this->filename_without_ext($this->original_name);
			$TEMP .= $name_without_ext;
		}
		if($this->rename_to){
			$TEMP = $this->file_prefix;
			$TEMP .= $this->rename_to;
		}
		if($this->safe_name){
			$TEMP = str_replace(" ","_",$TEMP);
		}
		
		do{
			$file_TEMP = $TEMP;
			$file_TEMP2 = $TEMP;
			$file_TEMP .= ".";
		    $file_TEMP .= $this->file_ext;
			if(file_exists($this->dirname.$file_TEMP)){
				$counter ++;
				$file_TEMP2 .= "$counter";
			}
			$file_TEMP2 .= ".";
		    $file_TEMP2 .= $this->file_ext;
		}while(file_exists($this->dirname.$file_TEMP2));
		
		$TEMP = $file_TEMP2;
		return $TEMP;
	}
	
	function upload_process(){
		if($this->upload_error <> ""){
			return $this->upload_error;
		}else{
			$this->filename = $this->up_file_name();
			if (is_uploaded_file($this->file_tmp))
	        {
	            if (@move_uploaded_file($this->file_tmp,$this->dirname.$this->filename)){
	            	$fila_path = $this->dirname.$this->filename;
	                $array_success = array("name"=>$this->filename,
										   "dirname"=>$this->dirname,
										   "size"=>$this->filesize,
										   "type"=>$this->filetype,
										   "ext"=>$this->file_ext,
										   "original_name"=>$this->original_name,
										   "file_path"=>$fila_path
										   );
					return $array_success;	                
			    }else{
	                @unlink($this->file_tmp);
	                echo '<b><font face=tahoma size=2><center>ÎØà : ÛíÑ ÞÇÏÑ Úáì äÞá ÇáãáÝ Çáì ÇáãÌáÏ ÇáãÚíä';
	            }
			}else{
	            @unlink($this->file_tmp);
		 		$this->upload_error = "File isn't Authorized to upload";			
        	}
		}
	}
	
	function mime_check(){
		return $this->mime_error = in_array($this->filetype,$this->allowed_mime_types);
	}
	
	function ext_check(){
		return $this->mime_error = in_array($this->filetype,$this->allowed_mime_types);
	}	
}

?>