redimensionar imagen externa y guardarla en la BD

[abimaelrc]

Bueno trate esto

Código PHP:

<?php
/**
 * File: ResizePicture.php
 * Author: Simon Jarvis
 * Copyright: Simon Jarvis
 * Date: 08/11/06
 * Original link: http://www.white-hat-web-design.co.uk/articles/php-image-resizing.php
 *
 * Modified Date: 05/14/11
 */
 
class ResizePicture {
   
    private $_image;
    private $_imageType;
 
    public function __construct($fileName=null)
    {
        if(!is_null($fileName)){
            $this->load($fileName);
        }
    }
 
    public function load($fileName)
    {
        $imageInfo = getimagesize($fileName);
        $this->_imageType = $imageInfo[2];
 
        if($this->_imageType == IMAGETYPE_JPEG){
            $this->_image = imagecreatefromjpeg($fileName);
        }
        elseif($this->_imageType == IMAGETYPE_GIF){
            $this->_image = imagecreatefromgif($fileName);
        }
        elseif($this->_imageType == IMAGETYPE_PNG){
            $this->_image = imagecreatefrompng($fileName);
        }
    }
 
    public function save($fileName, $compression=75, $permissions=null)
    {
        if($this->_imageType == IMAGETYPE_JPEG){
            imagejpeg($this->_image, $fileName, $compression);
        }
        elseif($this->_imageType == IMAGETYPE_GIF){
            imagegif($this->_image, $fileName);         
        }
        elseif($this->_imageType == IMAGETYPE_PNG){
            imagepng($this->_image, $fileName);
        }
 
        if(!is_null($permissions)) {
            chmod($fileName, $permissions);
        }
    }
 
    public function output()
    {
        if($this->_imageType == IMAGETYPE_JPEG){
            imagejpeg($this->_image);
        }
        elseif($this->_imageType == IMAGETYPE_GIF){
            imagegif($this->_image);         
        }
        elseif($this->_imageType == IMAGETYPE_PNG){
            imagepng($this->_image);
        }   
    }
 
    public function getWidth()
    {
        return imagesx($this->_image);
    }
 
    public function getHeight()
    {
        return imagesy($this->_image);
    }
 
    public function getImageType()
    {
        switch($this->_imageType){
            case IMAGETYPE_JPEG:
                $imageType = 'image/jpeg';
                break;
            case IMAGETYPE_GIF:
                $imageType = 'image/gif';
                break;
            case IMAGETYPE_PNG:
                $imageType = 'image/png';
                break;
            default:
                $imageType = null;
        }
        return $imageType;
    }
 
    public function resizeToHeight($height)
    {
        $ratio = $height / $this->getHeight();
        $width = $this->getWidth() * $ratio;
        $this->resize($width,$height);
    }
 
    public function resizeToWidth($width)
    {
        $ratio = $width / $this->getWidth();
        $height = $this->getHeight() * $ratio;
        $this->resize($width, $height);
    }
 
    public function scale($scale)
    {
        $width = $this->getWidth() * $scale / 100;
        $height = $this->getHeight() * $scale / 100; 
        $this->resize($width, $height);
    }
 
    public function resize($width, $height)
    {
        $newImage = imagecreatetruecolor($width, $height);
        imagecopyresampled($newImage, $this->_image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
        $this->_image = $newImage;   
    }      
}
 
$url = 'http://ladyoak.com/images/stories/big/line-art-conversion.gif';
 
$image = new ResizePicture($url);
$basename = basename($url);
$original = $basename;
$image->save($original);