wp-includes/class-wpdb.php:2446Adds a placeholder escape string, to escape anything that resembles a printf() placeholder.
$querystringstring public function add_placeholder_escape( $query ) { /* * To prevent returning anything that even vaguely resembles a placeholder, * we clobber every % we can find. */ return str_replace( '%', $this->placeholder_escape(), $query ); }Introduced in 4.8.3. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wpdb.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.