Image resize with image url

1 comment

1. u can use this:

   function wpse128538_resize($url, $width, $height = null, $crop = null, $single = true) {
   
   //validate inputs
       if (!$url OR !$width)
           return false;
   
   //define upload path & dir
       $upload_info = wp_upload_dir();
       $upload_dir = $upload_info['basedir'];
       $upload_url = $upload_info['baseurl'];
   
   //check if $img_url is local
       if (strpos($url, $upload_url) === false)
           return false;
   
   //define path of image
       $rel_path = str_replace($upload_url, '', $url);
       $img_path = $upload_dir . $rel_path;
   
   //check if img path exists, and is an image indeed
       if (!file_exists($img_path) OR !getimagesize($img_path))
           return false;
   
   //get image info
       $info = pathinfo($img_path);
       $ext = $info['extension'];
       list($orig_w, $orig_h) = getimagesize($img_path);
   
   //get image size after cropping
       $dims = image_resize_dimensions($orig_w, $orig_h, $width, $height, $crop);
       $dst_w = $dims[4];
       $dst_h = $dims[5];
   
   //use this to check if cropped image already exists, so we can return that instead
       $suffix = "{$dst_w}x{$dst_h}";
       $dst_rel_path = str_replace('.' . $ext, '', $rel_path);
       $destfilename = "{$upload_dir}{$dst_rel_path}-{$suffix}.{$ext}";
   
       if (!$dst_h) {
   //can't resize, so return original url
           $img_url = $url;
           $dst_w = $orig_w;
           $dst_h = $orig_h;
       }
   //else check if cache exists
       elseif (file_exists($destfilename) && getimagesize($destfilename)) {
           $img_url = "{$upload_url}{$dst_rel_path}-{$suffix}.{$ext}";
       }
   //else, we resize the image and return the new resized image url
       else {
   
   // Note: pre-3.5 fallback check 
           if (function_exists('wp_get_image_editor')) {
   
               $editor = wp_get_image_editor($img_path);
   
               if (is_wp_error($editor) || is_wp_error($editor->resize($width, $height, $crop)))
                   return false;
   
               $resized_file = $editor->save();
   
               if (!is_wp_error($resized_file)) {
                   $resized_rel_path = str_replace($upload_dir, '', $resized_file['path']);
                   $img_url = $upload_url . $resized_rel_path;
               } else {
                   return false;
               }
           } else {
   
               $resized_img_path = image_resize($img_path, $width, $height, $crop);
               if (!is_wp_error($resized_img_path)) {
                   $resized_rel_path = str_replace($upload_dir, '', $resized_img_path);
                   $img_url = $upload_url . $resized_rel_path;
               } else {
                   return false;
               }
           }
       }
   
   //return the output
       if ($single) {
   //str return
           $image = $img_url;
       } else {
   //array return
           $image = array(
               0 => $img_url,
               1 => $dst_w,
               2 => $dst_h
           );
       }
   
       return $image;
   }
   

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