Changed behaviour of esc_sql() in WordPress 4.8.3

As part of the WordPress 4.8.3 release, there is a change in `esc_sql()` behaviour that may affect pluginPlugin A plugin is a piece of software containing a group of functions that can be added to a WordPress website. They can extend functionality or add new features to your WordPress websites. WordPress plugins are written in the PHP programming language and integrate seamlessly with WordPress. These can be free in the WordPress.org Plugin Directory https://wordpress.org/plugins/ or can be cost-based plugin from a third-party developers who expect `esc_sql()` to return a string that’s usable outside of the context of building a query to send to WPDB.

While we strongly recommend you do not use `esc_sql()` for other purposes, we understand that it can be tricky to rewrite old code rapidly. To return to the old behaviour, you can use the `$wpdb->remove_placeholder_escape()` method, like so:

echo esc_sql( "100%" );
// "100{9fa52f39262a451892931117b9ab11b5a06d3a15faee833cc75edb18b4411d11}"

echo $wpdb->remove_placeholder_escape( esc_sql( "100%" ) );
// "100%"

#4-8, #4-8-3, #dev-notes, #wpdb