[PHP/OOP] Image Uploader by m0nsta.

This is just a quick and simple 30 minute code which I have been doing.

To get this working, all you have to do is save the code below as a PHP file, edit the $uploadTarget variable. When you change this variable, make sure that you create the folder too or you may receive a PHP error.

You can also edit the $maxSize variable if you wish to.

You can do whatever you wish to with this script, but please leave credits.. :)

Features:
- checks file size
- checks file extension
- checks if file exists
- checks if your $uploadTarget is writeable or not

index.php

PHP Code:

---

<?php
/*
Simple PHP OOP Image Upload script by m0nsta.
*/
class imgUploader
{
    var $exts = array( ".png", ".gif", ".png", ".jpg", ".jpeg" ); //all the extensions that will be allowed to be uploaded
    var $maxSize = 9999999; //if you set to "0" (no quotes), there will be no limit
    var $uploadTarget = "uploads/"; //make sure you have the '/' at the end
    var $fileName = ""; //this will be automatically set. you do not need to worry about this
    var $tmpName = ""; //this will be automatically set. you do not need to worry about this
    
    public function startUpload()
    {
        $this->fileName = $_FILES['uploaded']['name'];
        $this->tmpName = $_FILES['uploaded']['tmp_name'];
        if( !$this->isWritable() )
        {
            die( "Sorry, you must CHMOD your upload target to 777!" );
        }
        if( !$this->checkExt() )
        {
            die( "Sorry, you can not upload this filetype!" );
        }
        if( !$this->checkSize() )
        {
            die( "Sorry, the file you have attempted to upload is too large!" );
        }
        if( $this->fileExists() )
        {
            die( "Sorry, this file already exists on our servers!" );
        }
        if( $this->uploadIt() )
        {
            echo "Your file has been uploaded!<br><br>Click <a href=\"" . $this->uploadTarget . time() . $this->fileName . "\">here</a> to view your file!";
        }
        else
        {
            echo "Sorry, your file could not be uploaded for some unknown reason!";
        }
    }
    
    public function uploadIt()
    {
        return ( move_uploaded_file( $this->tmpName, $this->uploadTarget . time() . $this->fileName ) ? true : false );
    }
    
    public function checkSize()
    {
        return ( ( filesize( $this->tmpName ) > $this->maxSize ) ? false : true );
    }
    
    public function getExt()
    {
        return strtolower( substr( $this->fileName, strpos( $this->fileName, "." ), strlen( $this->fileName ) - 1 ) );
    }
    
    public function checkExt()
    {
        return ( in_array( $this->getExt(), $this->exts ) ? true : false );
    }
    
    public function isWritable()
    {
        return ( is_writable( $this->uploadTarget ) );
    }
    
    public function fileExists()
    {
        return ( file_exists( $this->uploadTarget . time() . $this->fileName ) );
    }
}
$img = new imgUploader();



if( $_POST['upload_file'] )
{
    $img->startUpload();
}
else
{
    echo "<form method=\"post\" enctype=\"multipart/form-data\">
        <p>
            <label for=\"file\">Select a file to upload:</label> <input type=\"file\" name=\"uploaded\" id=\"file\"><br>
            <input type=\"submit\" name=\"upload_file\" value=\"Upload!\">
        <p>
    </form>";
}
?>

---

Live demo:
http://mark-eriksson.com/php/imgupload/

Tips:
Put a blank index.html file in your $uploadTarget folder so that people can't view the uploaded files, this is up to you.

If you would like to view the files what have been uploaded to my site, click here.

If you choose to use this, I hope you like it.

Thanks,
- m0nsta.