让WordPress支持汉语用户名注册

将以下代码加入function.php即可：

//让wordpress支持中文用户名-wuzuowei.net
function ludou_sanitize_user ($username, $raw_username, $strict) {
 $username = wp_strip_all_tags( $raw_username );
 $username = remove_accents( $username );
 // Kill octets
 $username = preg_replace( '|%([a-fA-F0-9][a-fA-F0-9])|', '', $username );
 $username = preg_replace( '/&.+?;/', '', $username ); // Kill entities
 // 网上很多教程都是直接将$strict赋值false，
 // 这样会绕过字符串检查，留下隐患
 if ($strict) {
 $username = preg_replace ('|[^a-z\p{Han}0-9 _.\-@]|iu', '', $username);
 }
 $username = trim( $username );
 // Consolidate contiguous whitespace
 $username = preg_replace( '|\s+|', ' ', $username );
 return $username;
}
add_filter ('sanitize_user', 'ludou_sanitize_user', 10, 3);