I created a WordPress plugin based on a personal dilemma I ran into with my site being stripped of backslashes.
Upon post save, it converts backslashes to HTML entity ]
which is what will be stored in the database.
The plugin is available on GitHub at https://github.com/rjkreider/wp-preserve-backslashes
Here’s the function if you want to just drop it in your functions.php file instead of installing it as a plugin.
function wppb_keepbackslash($PostID) { $thePost = get_post($PostID); $Content = str_replace('\\', '\', $thePost->post_content); // unhook this function so it doesn't loop infinitely remove_action( 'save_post', 'wppb_keepbackslash' ); $UpdatedPost = array ( 'ID' => $PostID, 'post_title' => $thePost->post_title, 'post_content' => $Content ); wp_update_post( $UpdatedPost ); /** if (is_wp_error($post_id)) { $post_id= wp_update_post( $UpdatedPost ); $errors = $post_id->get_error_messages(); foreach ($errors as $error) { echo $error; } } **/ // re-hook this function add_action( 'save_post', 'wppb_keepbackslash' ); } add_action('save_post', 'wppb_keepbackslash' ); // Update Content when saving content