Upload and resize a image

[Anon]

small problem. i need a script which uploads a file and then resizes the image. the GD and ZLib library is installed and it runs on Linux.
can anyone give me links or some sample code to to do the resizing part.

thanks in advance

kalyan

[akozlov]

In my site i'm use this function, modify for your enviroment and use. Hope i'm help you. Sorry for poor English.

$tmp_file_name = $userfile;

function post_picture($act) {
  global $main_app;
  global $tmp_file_name;
  global $system_vars;
  $im = @imagecreatefromjpeg($tmp_file_name);
  if( !$im ) {
    $im = @imagecreatefrompng($tmp_file_name);
    $img_link = $system_vars[pic_path]."catalog/".$get_vars[firm_id]."/".$get_vars[item_id].".png";
    $is_png = true;
  } else {
    $img_link = $system_vars[pic_path]."catalog/".$get_vars[firm_id]."/".$get_vars[item_id].".jpeg";
    $is_png = false;
  }
  unlink($tmp_file_name);
  if( !$im ) {
    include($system_vars[hpx_path]."admin_top.hpx");
    include($system_vars[hpx_path]."article_pic_error.hpx");
    include($system_vars[hpx_path]."admin_bot.hpx");
    unlink($img_link);
    return;
  }
  if( !$is_png ) {
    $http_img_link = "catalog/".$get_vars[firm_id]."/".$get_vars[item_id].".jpeg";
  } else {
    $http_img_link = "catalog/".$get_vars[firm_id]."/".$get_vars[item_id].".png";
  }
  $width = imagesx($im);
  $height = imagesy($im);
  if( $width>=$height ) {
    if( $width>200 ) {
      $width = 200;
      $height = floor(200/imagesx($im)*$height);
    }
  } else {
    if( $height>150 ) {
      $height = 150;
      $width = floor(150/imagesy($im)*$width);
    }
  }
  $new_im = imagecreate($width,$height);
  imagecopyresized($new_im,$im,0,0,0,0,$width,$height,imagesx($im),imagesy($im));
  if( !$is_png ) { 
    if( !(imagejpeg($new_im,$img_link,80)) ) {
      include($system_vars[hpx_path]."admin_top.hpx");
      include($system_vars[hpx_path]."system_error.hpx");
      include($system_vars[hpx_path]."admin_bot.hpx");
      unlink($img_link);
      return;
    }
  } else {
    if( !(imagepng($new_im,$img_link)) ) {
      include($system_vars[hpx_path]."admin_top.hpx");
      include($system_vars[hpx_path]."system_error.hpx");
      include($system_vars[hpx_path]."admin_bot.hpx");
      unlink($img_link);
      return;
    }
  }
      Header("Location: ".$main_app->get_url()."\n");
      break;
}

[Anon]

thanks again,
the upload script works but
i
but some help i need

i upload 1 image,

it should have 2 copies

The first needs to be resized to fit centered on top of a black jpeg, 250 x 250 pixels

The second needs to be a smaller thumbnail, This photo should be copied with the _sm extension to the name (kalyan_sm.jpg).

any help in the codes

thanks in advance