revisedscript.php

<?php 
require_once dirname( __FILE__ ) . '/wp-load.php';


//$existing_image = 'http://guidevoyage.org.dev' . '/wp-content/uploads/2010/12/122010_0314_LamdinadeSo1.png';

//Locate the attachment post's ID in the database based on the GUID.
function getIDfromGUID( $full_image_url ){
    global $wpdb;
    return $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE `post_type` = 'attachment' AND  `guid` = %s ", $existing_image ) );

    //SELECT ID FROM `wp_posts` WHERE `guid` = 'http://guidevoyage.org.dev/wp-content/uploads/2010/12/122010_0314_LamdinadeSo1.png' AND `post_type` = 'attachment'
}



// // Run a loop for all posts that are articles
$posts = new WP_Query( array( 'post_type' => 'post', 'posts_per_page' => -1 ) );
	
	// Check that the query is not empty
	if ( $posts->have_posts() ): while ( $posts->have_posts() ): $posts->the_post();
		global $post;

		//Check that the post has an associated post_meta custom field for "Image" that's not empty, AND that the thumbnail is not set.
		$existing_image = get_post_meta($post->ID, 'Image');
		var_dump( $post );
		echo ( 'Working on ' . $post->ID . 'The partial URL is: ' . $existing_image );
		die();

		$full_image_url = 'http://guidevoyage.org.dev/' . $existing_image;

		if ( ! empty( $existing_image ) && ! has_post_thumbnail( $post->ID ) ) {
			
			$thumbnail_id = getIDfromGUID( $existing_image );
			if ( ! empty( $thumbnail_id ) ) {

				//Set the the Featured image we found to the matching Attachment Post from the URL
				//set_post_thumbnail( $post->ID, $thumbnail_id );

				//Keep things tidy by removing the Image custom field content
				//delete_post_meta( $post->ID, 'Image' );
				echo ( 'Post # ' . $post->ID . ' : ALL GOOD!!' . "\r\n");
			} else {
				echo ( 'Post # ' . $post->ID . ' : The ATTACHMENT post is missing' . "\r\n");
			}
		} else {
			if ( empty( $existing_image ) ) {
				echo ( 'Post # ' . $post->ID . ' : has no CUSTOM field image set.' . "\r\n" );
			} else if ( has_post_thumbnail( $post->ID ) ) {
				echo ( 'Post # ' . $post->ID . ' : has a THUMBNAIL already.' . "\r\n" );
			}
		}

	endwhile; endif;

 ?>