WordPress at a glance
filter is not described

pre_get_table_charset filter-hook . WP 4.2.0

Filters the table charset value before the DB is checked.

Passing a non-null value to the filter will effectively short-circuit checking the DB for the charset, returning that value instead.

Usage

add_filter( 'pre_get_table_charset', 'filter_function_name_586', 10, 2 );
function filter_function_name_586( $charset, $table ){
	// filter...

	return $charset;
}
$charset(string)
The character set to use.
Default: null
$table(string)
The name of the table being checked.

Where the hook is called

wpdb::get_table_charset()
pre_get_table_charset
wp-includes/wp-db.php 2555
$charset = apply_filters( 'pre_get_table_charset', null, $table );

Where the hook is used (in WP core)

Does not used.