Enregistrement automatique sur un serveur d'une image en ligne

<?php

 if( !ini_get('safe_mode') ){ 
            set_time_limit(500); 
        }
/*
http://www.white-hat-web-design.co.uk/articles/php-image-resizing.php
http://www.codeartistique.com/2009/01/08/connaitre-le-poids-dun-fichier-distant-utile-en-php-4x.html
*/

/*tu peux enlever cette fonction c'est juste pour le poids ...*/
function Remote_Filesize($url) {
        $sch = parse_url($url, PHP_URL_SCHEME);
        if (($sch != "http") && ($sch != "https") && ($sch != "ftp") && ($sch
!= "ftps")) {
            return false;
        }
        if (($sch == "http") || ($sch == "https")) {
            $headers = @get_headers($url, 1);
            if (!is_array($headers)){$headers=array();}
            if ((!array_key_exists("Content-Length", $headers))) { return
false; }
            return $headers["Content-Length"];
        }
        if (($sch == "ftp") || ($sch == "ftps")) {
            $server = parse_url($url, PHP_URL_HOST);
            $port = parse_url($url, PHP_URL_PORT);
            $path = parse_url($url, PHP_URL_PATH);
            $user = parse_url($url, PHP_URL_USER);
            $pass = parse_url($url, PHP_URL_PASS);
            if ((!$server) || (!$path)) { return false; }
            if (!$port) { $port = 21; }
            if (!$user) { $user = "anonymous"; }
            if (!$pass) { $pass = "phpos@"; }
            switch ($sch) {
                case "ftp":
                    $ftpid = ftp_connect($server, $port);
                    break;
                case "ftps":
                    $ftpid = ftp_ssl_connect($server, $port);
                    break;
            }
            if (!$ftpid) { return false; }
            $login = ftp_login($ftpid, $user, $pass);
            if (!$login) { return false; }
            $ftpsize = ftp_size($ftpid, $path);
            ftp_close($ftpid);
            if ($ftpsize == -1) { return false; }
            return $ftpsize;
        }
    }
 
/*
* File: SimpleImage.php
* Author: Simon Jarvis
* Copyright: 2006 Simon Jarvis
* Date: 08/11/06
* Link: http://www.white-hat-web-design.co.uk/articles/php-image-resizing.php
* 
* This program is free software; you can redistribute it and/or 
* modify it under the terms of the GNU General Public License 
* as published by the Free Software Foundation; either version 2 
* of the License, or (at your option) any later version.
* 
* This program is distributed in the hope that it will be useful, 
* but WITHOUT ANY WARRANTY; without even the implied warranty of 
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
* GNU General Public License for more details: 
* http://www.gnu.org/licenses/gpl.html
*
*/
 
class SimpleImage {
   
   var $image;
   var $image_type;
 
   function load($filename) {
      $image_info = getimagesize($filename);
      $this->image_type = $image_info[2];
      if( $this->image_type == IMAGETYPE_JPEG ) {
         $this->image = imagecreatefromjpeg($filename);
      } elseif( $this->image_type == IMAGETYPE_GIF ) {
         $this->image = imagecreatefromgif($filename);
      } elseif( $this->image_type == IMAGETYPE_PNG ) {
         $this->image = imagecreatefrompng($filename);
      }
   }
   function save($filename, $image_type=IMAGETYPE_JPEG, $compression=75, $permissions=null) {
      if( $image_type == IMAGETYPE_JPEG ) {
         imagejpeg($this->image,$filename,$compression);
      } elseif( $image_type == IMAGETYPE_GIF ) {
         imagegif($this->image,$filename);         
      } elseif( $image_type == IMAGETYPE_PNG ) {
         imagepng($this->image,$filename);
      }   
      if( $permissions != null) {
         chmod($filename,$permissions);
      }
   }
   function output($image_type=IMAGETYPE_JPEG) {
      if( $image_type == IMAGETYPE_JPEG ) {
         imagejpeg($this->image);
      } elseif( $image_type == IMAGETYPE_GIF ) {
         imagegif($this->image);         
      } elseif( $image_type == IMAGETYPE_PNG ) {
         imagepng($this->image);
      }   
   }
   function getWidth() {
      return imagesx($this->image);
   }
   function getHeight() {
      return imagesy($this->image);
   }
   function resizeToHeight($height) {
      $ratio = $height / $this->getHeight();
      $width = $this->getWidth() * $ratio;
      $this->resize($width,$height);
   }
   function resizeToWidth($width) {
      $ratio = $width / $this->getWidth();
      $height = $this->getheight() * $ratio;
      $this->resize($width,$height);
   }
   function scale($scale) {
      $width = $this->getWidth() * $scale/100;
      $height = $this->getheight() * $scale/100; 
      $this->resize($width,$height);
   }
   function resize($width,$height) {
      $new_image = imagecreatetruecolor($width, $height);
      imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
      $this->image = $new_image;   
   }      
}
/*ton rep de stockage*/
$rep='mini';
if(file_exists($rep)){
}else{
mkdir($rep,chmod($rep, 755)); /*yo unix seulement*/
}

/*1 à 25 faire une boucle */
$f='http://upload.wikimedia.org/wikipedia/commons/archive/3/3c/20090824120448!Nicolas_Sarkozy_(2008).jpg';
$i=explode('/',$f);
$x=(count($i)-1);
echo '<pre>';
print_r($i);
echo '</pre>';
echo $img=$i[$x];

$n=$rep.'/'.$img;
if(file_exists($rep.'/'.$img)){
//on fait rien il existe
}else{
//$file = file_get_contents ($f); 
/*
echo '<pre>';
$r2=getimagesize($f);
$r3=Remote_Filesize($f);
print_r($r2);
print_r($r3);
echo ' OCTETS ';
echo '</pre>';
*/ 

/*on redimensionne et enregistre*/ 
   $image = new SimpleImage();
   $image->load($f);
   $image->resizeToHeight(480);
   $image->save($n);    
   
   echo 'reussi';
}
?>