apply_filters( 'pre_get_table_charset', string|WP_Error|null $charset, string $table )

3210<?php3211		 * @since 4.2.03212		 *3213		 * @param string|WP_Error|null $charset The character set to use, WP_Error object3214		 *                                      if it couldn't be found. Default null.3215		 * @param string               $table   The name of the table being checked.3216		 */3217		$charset = apply_filters( 'pre_get_table_charset', null, $table );3218		if ( null !== $charset ) {3219			return $charset;3220		}3221 3222		if ( isset( $this->table_charset[ $tablekey ] ) ) {3223			return $this->table_charset[ $tablekey ];