wp-includes/class-wpdb.php:1892Disables showing of database errors.
bool public function hide_errors() { $show = $this->show_errors; $this->show_errors = false; return $show; }Introduced in 0.71. 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.