mirror of
https://github.com/10h30/display-featured-image-genesis.git
synced 2026-07-11 18:46:03 +09:00
Robin Cornett
43 lines
1.5 KiB
PHP
43 lines
1.5 KiB
PHP
<?php
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/**
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* Common functions for plugin
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*
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* @package DisplayFeaturedImageGenesis
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* @since 1.2.1
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*/
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class Display_Featured_Image_Genesis_Common {
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/**
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* Get the ID of each image dynamically.
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*
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* @since 1.2.0
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*
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* @author Philip Newcomer
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* @link http://philipnewcomer.net/2012/11/get-the-attachment-id-from-an-image-url-in-wordpress/
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*/
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static function get_image_id( $attachment_url ) {
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global $wpdb;
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$attachment_id = false;
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// Get the upload directory paths
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$upload_dir_paths = wp_upload_dir();
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// Make sure the upload path base directory exists in the attachment URL, to verify that we're working with a media library image
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if ( false !== strpos( $attachment_url, $upload_dir_paths['baseurl'] ) ) {
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// If this is the URL of an auto-generated thumbnail, get the URL of the original image
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$attachment_url = preg_replace( '(-\d{3,4}x\d{3,4}.)', '.', $attachment_url );
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// Remove the upload path base directory from the attachment URL
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$attachment_url = str_replace( $upload_dir_paths['baseurl'] . '/', '', $attachment_url );
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// Finally, run a custom database query to get the attachment ID from the modified attachment URL
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$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 ) );
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}
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return $attachment_id;
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}
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}
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