Custom Image Sizes Resizing without cropping is already part of the core functionality, via add_image_size(). Note the last parameter: <?php add_image_size( $name, $width, $height, $crop ); ?> The Codex entry describes the $crop parameter as follows: $crop (boolean) (optional) Crop the image or not. False – Soft proportional crop mode ; True – Hard crop … Read more
You will need to do a check for the image size before you add the add_image_size in that case. You can use wp_get_attachment_metadata() to find the size of the image. https://codex.wordpress.org/Function_Reference/wp_get_attachment_metadata
add below code after echo $attach_id…. set_post_thumbnail( $post_id , $attach_id);
Considering that you will come up with a solution to the accessibility issue pointed by @toscho… Putting a lower priority (later execution) to the filter does the job. $priority (integer) (optional) Used to specify the order in which the functions associated with a particular action are executed. Lower numbers correspond with earlier execution, and functions … Read more
Your better off adding your custom image data when you insert it into a post using media_send_to_editor, the caveat is this will not be applied to any existing images, only ones inserted after adding the function. To apply it to to existing content you will have use preg_match on the_content filter, but this can significantly … Read more
You have not created the attachment as link to the post, you will need to do that first. Then you can use in the content. Alternative it is possibel to upload to other path, but better is a link in the post, post-ID to attachment-ID. Easiest way to do that is with wp_insert_attachment(). This function … Read more
Invalid argument supplied for foreach means that the X in foreach X as … is not an array. You can prevent this error by type casting; add (array) before the argument in the foreach statement. This will turn your variable into an array, essentially. In your code, the change would be… foreach ( (array) $attach_meta[‘sizes’] … Read more
For each image/post combination, run the following. $image_name is the filename, $post_id is the post ID. if( $image_name != ” && !has_post_thumbnail( $post_id ) ){ $base = get_stylesheet_directory(); $imgfile= $base . ‘/import/’ . $image_name; // Images are stored inside an imports folder, in the theme directory $filename = basename($imgfile); $upload_file = wp_upload_bits($filename, null, file_get_contents($imgfile)); if … Read more
By default images already have unique class’s but this depends on your theme. Use firebug and hover over the images and you should see stuff like class=”aligncenter size-full wp-image-1525″. If you want to change the class or id or alter any attributes of the image you can use the get_image_tag filter. For example, add_filter(‘get_image_tag_class’,’my_custom_class’); function … Read more
I know it’s one year old but just in case someone else is also searching: You could upload the main files (not all 3 sizes, just the original images) via FTP to another directory on your server and then use the Add-From-Server Plugin.