re_needle = false, $encoding = null) { return p\Mbstring::mb_stristr($haystack, $needle, $before_needle, $encoding); }
}
if (!function_exists('mb_strrchr')) {
    function mb_strrchr($haystack, $needle, $before_needle = false, $encoding = null) { return p\Mbstring::mb_strrchr($haystack, $needle, $before_needle, $encoding); }
}
if (!function_exists('mb_strrichr')) {
    function mb_strrichr($haystack, $needle, $before_needle = false, $encoding = null) { return p\Mbstring::mb_strrichr($haystack, $needle, $before_needle, $encoding); }
}
if (!function_exists('mb_strripos')) {
    function mb_strripos($haystack, $needle, $offset = 0, $encoding = null) { return p\Mbstring::mb_strripos($haystack, $needle, $offset, $encoding); }
}
if (!function_exists('mb_strrpos')) {
    function mb_strrpos($haystack, $needle, $offset = 0, $encoding = null) { return p\Mbstring::mb_strrpos($haystack, $needle, $offset, $encoding); }
}
if (!function_exists('mb_strstr')) {
    function mb_strstr($haystack, $needle, $before_needle = false, $encoding = null) { return p\Mbstring::mb_strstr($haystack, $needle, $before_needle, $encoding); }
}
if (!function_exists('mb_get_info')) {
    function mb_get_info($type = 'all') { return p\Mbstring::mb_get_info($type); }
}
if (!function_exists('mb_http_output')) {
    function mb_http_output($encoding = null) { return p\Mbstring::mb_http_output($encoding); }
}
if (!function_exists('mb_strwidth')) {
    function mb_strwidth($string, $encoding = null) { return p\Mbstring::mb_strwidth($string, $encoding); }
}
if (!function_exists('mb_substr_count')) {
    function mb_substr_count($haystack, $needle, $encoding = null) { return p\Mbstring::mb_substr_count($haystack, $needle, $encoding); }
}
if (!function_exists('mb_output_handler')) {
    function mb_output_handler($string, $status) { return p\Mbstring::mb_output_handler($string, $status); }
}
if (!function_exists('mb_http_input')) {
    function mb_http_input($type = null) { return p\Mbstring::mb_http_input($type); }
}

if (!function_exists('mb_convert_variables')) {
    function mb_convert_variables($to_encoding, $from_encoding, &...$vars) { return p\Mbstring::mb_convert_variables($to_encoding, $from_encoding, ...$vars); }
}

if (!function_exists('mb_ord')) {
    function mb_ord($string, $encoding = null) { return p\Mbstring::mb_ord($string, $encoding); }
}
if (!function_exists('mb_chr')) {
    function mb_chr($codepoint, $encoding = null) { return p\Mbstring::mb_chr($codepoint, $encoding); }
}
if (!function_exists('mb_scrub')) {
    function mb_scrub($string, $encoding = null) { $encoding = null === $encoding ? mb_internal_encoding() : $encoding; return mb_convert_encoding($string, $encoding, $encoding); }
}
if (!function_exists('mb_str_split')) {
    function mb_str_split($string, $length = 1, $encoding = null) { return p\Mbstring::mb_str_split($string, $length, $encoding); }
}

if (extension_loaded('mbstring')) {
    return;
}

if (!defined('MB_CASE_UPPER')) {
    define('MB_CASE_UPPER', 0);
}
if (!defined('MB_CASE_LOWER')) {
    define('MB_CASE_LOWER', 1);
}
if (!defined('MB_CASE_TITLE')) {
    define('MB_CASE_TITLE', 2);
}