My first shot at writing a class

jwmstudios · April 25, 2010

i made a little uploader class, its not refined but it works,

here is the class

<?php 
/* 
   This is a simple file uploader class created by me: Hugo Johnson
   website: www.jwmstudios.com
   email: hugoj@hotmail.com 
   
   Its my first real shot at creating a php class, i am still a todler to this. 

*/ 

Class Uploader {
    
    // Declaring my variables needed for this class, it makes sense. 
    public   $input_field_name = "userfile";  // default input field name 
    public   $file_size =300000;  // default file size 
    public   $path_directory = "";  // location to send the file 
    public   $action_path_and_file = "uploader.php";  // default form action

   
    
    function  form() {  // This form is optional used if no form is provided, only good for one file 
        
            echo <<<END
<form enctype="multipart/form-data" method="post" action="$this->action_path_and_file ">
            <input name="$this->input_field_name" type="file" /><br /><input type="hidden" name="max_size" value="$this->file_size" />
            <input type="submit" value="Upload" />
</form>
END;

        
    }
    
    
    function file_field($field_name) { // optional for adding more than one file
        
               echo "<br /><input name=\"$field_name\" type=\"file\" /><br />";
        
    }


    function  upload($input_field_name) {  // this will upload a file that coresponds to a field name of type file 
        
           $filename = $_FILES[$input_field_name]['name'];  // coming from the form
           $filesize = $_FILES[$input_field_name]['size']; //   " "
           $temp = $_FILES[$input_field_name]['tmp_name']; //   " "
           
           // move Uploaded File function places the file from its temp directory and puts it into the desired directory, 

            $path = $this->path_directory.$filename;     // you can type a path directory structure between the quotes eg. ../ or /filestorage etc. 
            $uploadfile = move_uploaded_file($temp, $path);   // moving file from temp location to new chosen path
            
             echo $uploadfile === TRUE ? '<br />File uploaded<br />' : '<br />Awaiting File Upload<br />';
        
    }
    
    
}


?>

Save the file as uploader_bk.php

Here is the test form:

<?php
// This is the test upload form 
  
include_once("uploader_bk.php");   // importing the Uploader class 
  
$myupload = new Uploader();   // declaring a new uploader object 

$myupload->file_size = 400000;     // setting a different file size 

$myupload->path_directory = "myfiles/"; // You can mod the path directory at any time, leave blank if is on the same path as the script  

$myupload->action_path_and_file = $_SERVER['PHP_SELF'];   // use $_SERVER['PHP_SELF'] if its the same script that is doing the processing 

$fieldname = array("joe", "Mary");  // This can apply to one file you may need to prefix variable names to add more fields;  this could also be an include 

$max_fields = count($fieldname);  // getting the maximum number of fields that you need 


echo "<br />";


?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Handling File Uploads</title>
</head>

<body>

<form enctype="multipart/form-data" method="post" action="<?php  echo $myupload->action_path_and_file; ?>">
            
            <?php 
            
                for ($i=0 ; $i < $max_fields; $i++) {
                    
                    $myupload->file_field($fieldname[$i]);  // input field. 
                    $myupload->upload($fieldname[$i]);    // The uploading process. 
                
                }
            
           
            ?>
            
            
            <input type="submit" value="Send File" />
</form>
</body>
</html>

jwmstudios · April 26, 2010

I also added a image re-sizer for those that are interested in resizing an image and sending it to a new path, it was a challenge creating this and i know its buggy thats why i seek a community such as this one to help me to find them and we can all share good code to make our work flow faster.

Antway here is the class, call it uploader_bk.php

<?php 

/* 
   This is a simple file uploader class created by me: Hugo Johnson
   website: www.jwmstudios.com
   email: hugoj@hotmail.com 
   
   Its my first real shot at creating a php class, i am still a todler to this. 
   
   The Class called uploader is responsible for creating a file field and a single form, or many file fields (without a form) 
   It then uploads the chosen file to a specified path, once you click on the browse button and submitt the form. 
   
   The Sub-Class called Image is used to both upload the image to a chosen path as well as create a thumbnailed copy
   this thumbnail can be resized based of the new height parameter that is passed in by the user.
   
   Needs more work and validation but enjoy. 

*/ 



      Class Uploader  {
    
    // Declaring my variables needed for this class, it makes sense. 
    public   $input_field_name = "userfile";  // default input field name 
    public   $file_size =300000;  // default file size 
    public   $path_directory = "";  // location to send the file 
    public   $action_path_and_file = "uploader.php";  // default form action

   
    
    function  form() {  // This form is optional used if no form is provided, only good for one file 
        
            echo <<<END
<form enctype="multipart/form-data" method="post" action="$this->action_path_and_file ">
            <input name="$this->input_field_name" type="file" /><br /><input type="hidden" name="max_size" value="$this->file_size" />
            <input type="submit" value="Upload" />
</form>
END;

        
    }
    
    
    function file_field($field_name) { // optional for adding more than one file
        
               echo "<br /><input name=\"$field_name\" type=\"file\" /><br />";
        
    }


    function  upload($input_field_name) {  // this will upload a file that coresponds to a field name of type file 
        
           $filename = $_FILES[$input_field_name]['name'];  // coming from the form
           $filesize = $_FILES[$input_field_name]['size']; //   " "
           $temp = $_FILES[$input_field_name]['tmp_name']; //   " "
           
           // move Uploaded File function places the file from its temp directory and puts it into the desired directory, 

            $path = $this->path_directory.$filename;     // you can type a path directory structure between the quotes eg. ../ or /filestorage etc. 
            $uploadfile = move_uploaded_file($temp, $path);   // moving file from temp location to new chosen path
            
             // echo $uploadfile === TRUE ? '<br />File uploaded<br />' : '<br />Awaiting File Upload<br />';
             // echo "<br />".$this->path_directory.$filename."<br />"; 
             
             if($uploadfile === TRUE) {
                 
                 echo '<br />Congrats file uploaded<br />';        // These are optional outputs for testing purpose 
                 
                 return TRUE; 
                 
             }     else {
                 
                 echo '<br />Awaiting File Upload<br />';       // These are optional outputs for testing purpose  
                 
                 return FALSE; 
             }
        
    }
    
    
}

  
  
  
  Class Image extends Uploader{
      
      // Declaring my varaibles
      public  $newpath;       // This will be the new location of the thumbnail image
      public  $new_height;    // This parameter will specify the size of thumbnail
      
      
      
      
       
function fetch_filename($input_field_name){  // simple utilty for testing  purpose
     
     return   $filename = $_FILES[$input_field_name]['name'];
     
}     
      
      
    
function resizeimage($x) {  // begin image resizer     x is the fieldname 

        $filename = $_FILES[$x]['name'];    // generating the file name from the field name 
        // echo $this->path_directory.$filename; 
       //  echo "<br />new path:".$this->newpath.$filename; 
        
         // Tsting to see if is correct extension. 
        $ext = strrchr($filename, '.');  
        
         switch ($ext) {
         case ".jpg":
          $im = imagecreatefromjpeg($this->path_directory.$filename); 
         break;
         case ".gif":
        $im = imagecreatefromgif($this->path_directory.$filename); 
          break;
          case ".png":
         $im = imagecreatefrompng($this->path_directory.$filename);
          break; 
      
          default:
         $im = imagecreatefromstring(file_get_contents($this->path_directory.$filename));
      
         
      }
        

     $get_image = $im;   // assigning get image to im variable 

       
       
      
   
    // if($get_image === True) { echo "get image is true!";}
     
    if ($get_image === false) {
        die ('Unable to open image');   // scipt ends if stuff goes wrong 
    }


    // Get original width and height
    $width = imagesx($get_image);
    $height = imagesy($get_image);

    // Set a new width, and calculate new height
    $new_width = $width * ($this->new_height/$height);
    
    // Resample the image
    $image_resized = imagecreatetruecolor($new_width, $this->new_height);
    imagecopyresampled($image_resized, $get_image,0 , 0,0 ,0 , $new_width, $this->new_height, $width, $height);
    
    
    //imagejpeg($image_resized_big, $path_thumb);
    imagejpeg($image_resized, $this->newpath.$filename);
                                                      
    
    

}    // end of image resizer


      
      
  }


?>

here is the test form:

<?php
// This is the test upload form 
  
include_once("uploader_bk.php");   // importing the Uploader class
//============================ VARAIBLE DECLARATIONS ===============================
  
$myupload = new Image();   // declaring a new uploader object 

$myupload->file_size = 400000;     // setting a different file size 

$myupload->path_directory = "myfiles/"; // You can mod the path directory at any time, leave blank if is on the same path as the script  

$myupload->action_path_and_file = $_SERVER['PHP_SELF'];   // use $_SERVER['PHP_SELF'] if its the same script that is doing the processing 

$fieldname = array("joe", "Mary");  // This can apply to one file you may need to prefix variable names to add more fields;  this could also be an include 

$max_fields = count($fieldname);  // getting the maximum number of fields that you need could be an include  

$myupload->newpath = $myupload->path_directory."thumbs/";  // The path for the thumbs directory 

$myupload->new_height = 100;  // the new height parameter for the thumbnail image

//==================================================================================

?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Handling File Uploads</title>
</head>

<body>

<form enctype="multipart/form-data" method="post" action="<?php  echo $myupload->action_path_and_file; // path to the process script ?>">
            
            <?php 
            
                // Simple for loop that will repeat the steps based off the max_fields varaible. 
                for ($i=0 ; $i < $max_fields; $i++) {
                    
                    $myupload->file_field($fieldname[$i]);  // input field.
                    $upload = $myupload->upload($fieldname[$i]); // file uploader  
                    
                    if($upload === TRUE) {  // Testing to see if upload variable returns a true value 
                                   
                               $myupload->resizeimage($fieldname[$i]);   // image resizer 
                                
                                
                         }   
                       
                         
                   
                   }
            
           
            ?>
            
            
            <input type="submit" value="Send File" />
</form>
</body>
</html>

my next mission is to fuse it with a MySQL Class so that i can reference the files in a database and also a remover function that will remove my files from both the server and the database, some assistance / guidance will be greatly appreciated.

trq · April 26, 2010

Why would Image extend Uploader? They don't seem at all related.

PFMaBiSmAd · April 26, 2010

Your upload() method does not check if the form was submitted and so executes all the upload processing code when the form is requested, thereby generating a number of errors. The upload() method also does not test for any of the possible upload errors before blindly attempting to access any of the $_FILES data.

jwmstudios · April 26, 2010

i know, alot of bugs are there, but its a class that can be built on.

jwmstudios · April 26, 2010

"Why would Image extend Uploader? They don't seem at all related." its simple, uploader uploads the file and image manipulates the file uploaded, you can have a subclass called videos extending from uploader as well as pdf and other mime types etc. its unlimited ideas that can be spawned.

trq · April 26, 2010

"Why would Image extend Uploader? They don't seem at all related." its simple, uploader uploads the file and image manipulates the file uploaded, you can have a subclass called videos extending from uploader as well as pdf and other mime types etc. its unlimited ideas that can be spawned.

My point however is that the objects aren't related, they should be used as separate objects.

jwmstudios · May 31, 2010

i understand now i should of separated the classes and let them interact.

ignace · June 1, 2010

"Why would Image extend Uploader? They don't seem at all related." its simple, uploader uploads the file and image manipulates the file uploaded, you can have a subclass called videos extending from uploader as well as pdf and other mime types etc. its unlimited ideas that can be spawned.

From your description, Image looks like a plugin to your Uploader class. Also separate HTML from your PHP, your uploader only needs to know the field and if it's an array. Your Uploader package should contain these classes at a minimum:

Uploader -- The main uploader class

Uploader_Abstract -- Façade for the actual upload process (final), does not define the methods in the _Interface

Uploader_Interface -- defines the methods used by the Façade

Uploader_File -- Representation of a uploaded File, allows for easy operations on a file (eg hasExtension(array('jpg', 'jpeg', ..)), isValid(), ..)

Uploader_Plugin_Image -- Takes in a Uploader_File verifies its an image and performs resizing

Uploader_Plugin_Upload -- performs the actual uploading and is auto-appended by the Uploader class on the upload() call

Uploader_Plugin_Abstract -- Used to add more plugins in the future (eg PDF, Video, ..)

As you can see it contains a Uploader_Plugin_Upload class which performs the actual uploading, this is to allow uploads of the original file and a thumbnail.

$upload->addPlugin(new Uploader_Plugin_Upload('images'))

->addPlugin(new Uploader_Plugin_Image('50%'))

->addPlugin(new Uploader_Plugin_Upload('images/thumbnails'))

->upload('file', TRUE);

jwmstudios · October 21, 2010

Thanks for the tip, i see what you are saying, i am working on a new uploader.

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