Autoconvertitore delle immagini durante l'upload sul server + sfogliatore

[Excalibur81]

Ciao a tutti,

quando faccio l'upload delle immagini sul server, si possono fare le seguenti cose?:

- ridurre le dimensioni
- creare piu immagini con diverse dimensioni (versione piccola, e versione grande)

Qualcuno sa dove posso andare a pescare uno sfogliatore di immagini, stile facebook che quando clicchi su un immagine, puoi sfogliare l'intero album?

Grazie.
If

[eiyen]

per trattare le immagini puoi usare le funzioni tipo imagecreate e altre di php, mentre per lo "sfogliate" cerca in javascript

[Excalibur81]

Trovato:

<?php  if(isset($_POST['submit'])) {             $msg_errore="";     //make sure this directory is writable!         $path_thumbs = "/home/annunci/public_html/Immagini_piccole/";                  //the new width of the resized image, in pixels.         $img_thumb_width = 200; //          $extlimit = "yes"; //Limit allowed extensions? (no for all extensions allowed)          //List of allowed extensions if extlimit = yes         $limitedext = array(".gif",".jpg",".jpeg");                  //the image -> variables         $file_type = $_FILES['tb_upload_file1']['type'];         $file_name = $_FILES['tb_upload_file1']['name'];         $file_size = $_FILES['tb_upload_file1']['size'];         $file_tmp = $_FILES['tb_upload_file1']['tmp_name'];          echo($_FILES['vImage']['size']);          //check the file's extension     $ext = strrchr($file_name,'.');     $ext = strtolower($ext);     //uh-oh! the file extension is not allowed!          if (($extlimit == "yes") && (!in_array($ext,$limitedext)))      {         $msg_errore="Gli unici formati ammessi sono .gif .jpg .jpeg";         $nessun_upload = 1;         //echo($msg_errore);         //exit();     }          if($file_size > 1048576)      {         $msg_errore="La dimensione massima per il file é di 1 MB.";         $nessun_upload = 1;      }                //so, whats the file's extension?     $getExt = explode ('.', $file_name);     $file_ext = $getExt[count($getExt)-1];          //create a random file name     $rand_name = md5(time());     $rand_name= rand(0,999999999);          //the new width variable     $ThumbWidth = $img_thumb_width;          /////////////////////////////////     // CREATE THE THUMBNAIL //     ////////////////////////////////  if(strlen($msg_errore) == 0)  {     //keep image type     if($file_size)     {         if($file_type == "image/pjpeg" || $file_type == "image/jpeg")             {             $new_img = imagecreatefromjpeg($file_tmp);                           }         elseif($file_type == "image/x-png" || $file_type == "image/png")             {             $new_img = imagecreatefrompng($file_tmp);                     }         elseif($file_type == "image/gif")             {                     $new_img = imagecreatefromgif($file_tmp);                     }                  //list the width and height and keep the height ratio.         list($width, $height) = getimagesize($file_tmp);                  //calculate the image ratio         $imgratio=$width/$height;                  if ($imgratio>1)             {             $newwidth = $ThumbWidth;             $newheight = $ThumbWidth/$imgratio;             }         else             {             $newheight = $ThumbWidth;             $newwidth = $ThumbWidth*$imgratio;             }                  //function for resize image.                  if (function_exists(imagecreatetruecolor))             {             $resized_img = imagecreatetruecolor($newwidth,$newheight);             }         else             {             die("Error: Please make sure you have GD library ver 2+");             }                  //the resizing is going on here!         imagecopyresized($resized_img, $new_img, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);                  //finally, save the image         $i=1;         $new_filename = date("Ymd", time())."_".$i.".$file_ext";                  while(file_exists('/home/annunci/public_html/Immagini_grandi/'.$new_filename))         {             ++$i;             $new_filename = date("Ymd", time())."_".$i.".$file_ext";                         }                  while(file_exists('/home/annunci/public_html/Immagini_piccole/'.$new_filename))         {             ++$i;             $new_filename = date("Ymd", time())."_".$i.".$file_ext";                         }         echo($new_filename);                  //ImageJpeg ($resized_img,"$path_thumbs/$rand_name.$file_ext");         ImageJpeg ($resized_img,"$path_thumbs/$new_filename");         ImageDestroy ($resized_img);         ImageDestroy ($new_img);          }          //ok copy the finished file to the thumbnail directory     $path_big = "/home/annunci/public_html/Immagini_grandi/";          //move_uploaded_file ($file_tmp, "$path_big/$rand_name.$file_ext");     move_uploaded_file ($file_tmp, "$path_big/$new_filename");     //copy($file_tmp, "$path_big/$new_filename");   }  }  echo "  <form action=\"$_SERVER[PHP_SELF]\" method=\"post\"enctype=\"multipart/form-data\">\n  

File:<input type=\"file\" name=\"vImage\" /></p>\n  

<input type=\"submit\" name=\"submit\" value=\"Submit\" /></p>";     ?>