I need to resize some images in some of my posts. I can get the image URL stored in postmeta created using the Types plugin.
So using postmeta I can get the URL, but how to resize the images of a specific post type?
1 Answers
Answers 1
First you have to find attached image id from image URL. To get attached image id from image URL add below function in your theme functions.php file:
function pn_get_attachment_id_from_url( $attachment_url = '' ) { global $wpdb; $attachment_id = false; // If there is no url, return. if ('' == $attachment_url) return; // Get the upload directory paths $upload_dir_paths = wp_upload_dir(); // Make sure the upload path base directory exists in the attachment URL, to verify that we're working with a media library image if (false !== strpos($attachment_url, $upload_dir_paths['baseurl'])) { // If this is the URL of an auto-generated thumbnail, get the URL of the original image $attachment_url = preg_replace('/-\d+x\d+(?=\.(jpg|jpeg|png|gif)$)/i', '', $attachment_url); // Remove the upload path base directory from the attachment URL $attachment_url = str_replace($upload_dir_paths['baseurl'] . '/', '', $attachment_url); // Finally, run a custom database query to get the attachment ID from the modified attachment URL $attachment_id = $wpdb->get_var($wpdb->prepare("SELECT wposts.ID FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta WHERE wposts.ID = wpostmeta.post_id AND wpostmeta.meta_key = '_wp_attached_file' AND wpostmeta.meta_value = '%s' AND wposts.post_type = 'attachment'", $attachment_url)); } return $attachment_id; } For more information read see url - https://philipnewcomer.net/2012/11/get-the-attachment-id-from-an-image-url-in-wordpress/
Then we need to use image resize function in function.php:
add_image_size( 'latestproperty_thumb', 370,293,true ); To get the image attachment id use:
$attachid = pn_get_attachment_id_from_url($url); After this install https://wordpress.org/plugins/regenerate-thumbnails/. Then go to Tools->Regenerate thumbnail and regenerate all thumbnails.
After that use this to get the regenerated image url:
$src = wp_get_attachment_image_src($attachid, 'latestproperty_thumb'); 
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