wp-includes/class-wpdb.php:799Makes private properties settable for backward compatibility.
$namestring$valuemixed public function __set( $name, $value ) { $protected_members = array( 'col_meta', 'table_charset', 'check_current_query', 'allow_unsafe_unquoted_parameters', ); if ( in_array( $name, $protected_members, true ) ) { return; } $this->$name = $value; }Introduced in 3.5.0. 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.