WP All Import | Update list of posts by matching post slug via Record Matching

wp-all-import-update-posts-by-matching-slug.php

<?php

// https://wordpress.org/support/topic/bulk-edit-record-matching-by-slug/#post-14026355

// Create custom PHP function that we can use in the "Post ID" field under Record Matching
// We pass the post slug to our function, then we use this function tot look up the post by its slug, to return the Post ID
function fs_get_post_by_slug( $slug, $post_type = 'post' ) {
	if ( $post = get_page_by_path( $slug, OBJECT, $post_type ) ) {
		return $post->ID;
	}
}

/** 

Usage in the "Post ID" field would be:
[fs_get_post_by_slug({postslug[1]})]
... {postslug[1]} should be changed to whatever the slug's column name (node/tag) is from the CSV you're using, such as {slug[1]}

If matching a custom post type, then pass the post type slug as the second parameter, to override the function's default of post:
[fs_get_post_by_slug({postslug[1]},"product")]

**/