do_action( ‘delete_post’, int $post_id, WP_Post $post )

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   Collins Mbaka 5 years ago

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   Let’s suppose you have a plugin that, for one reason or another, stores its own post metadata in a separate database table called codex_postmeta. One of the ways you can achieve synchronization is to be made aware when a post is deleted so that you can replicate the changes yourself.

   add_action( 'admin_init', 'wpdocs_codex_init' ); function wpdocs_codex_init() { add_action( 'delete_post', 'wpdocs_codex_sync', 10 ); } function wpdocs_codex_sync( $pid ) { global $wpdb; $query = $wpdb->prepare( 'SELECT post_id FROM codex_postmeta WHERE post_id = %d', $pid ); $var = $wpdb->get_var( $query ); if ( $var ) { $query2 = $wpdb->prepare( 'DELETE FROM codex_postmeta WHERE post_id = %d', $pid ); $wpdb->query( $query2 ); } }