RandomCompat_substr()
This version uses mb_substr() in '8bit' mode to treat strings as raw binary rather than UTF-8, ISO-8859-1, etc
Хуков нет.
Возвращает
Строку
.
Использование
RandomCompat_substr( $binary_string, $start, $length );
- $binary_string(строка) (обязательный)
- -
- $start(int) (обязательный)
- -
- $length(int)
- (optional)
По умолчанию: null
Код RandomCompat_substr() RandomCompat substr WP 5.9.3
function RandomCompat_substr($binary_string, $start, $length = null) { if (!is_string($binary_string)) { throw new TypeError( 'RandomCompat_substr(): First argument should be a string' ); } if (!is_int($start)) { throw new TypeError( 'RandomCompat_substr(): Second argument should be an integer' ); } if ($length === null) { /** * mb_substr($str, 0, NULL, '8bit') returns an empty string on * PHP 5.3, so we have to find the length ourselves. */ $length = RandomCompat_strlen($binary_string) - $start; } elseif (!is_int($length)) { throw new TypeError( 'RandomCompat_substr(): Third argument should be an integer, or omitted' ); } // Consistency with PHP's behavior if ($start === RandomCompat_strlen($binary_string) && $length === 0) { return ''; } if ($start > RandomCompat_strlen($binary_string)) { return ''; } return (string) mb_substr($binary_string, $start, $length, '8bit'); } } else { /** * substr() implementation that isn't brittle to mbstring.func_overload * * This version just uses the default substr() * * @param string $binary_string * @param int $start * @param int $length (optional) * * @throws TypeError * * @return string */ function RandomCompat_substr($binary_string, $start, $length = null) { if (!is_string($binary_string)) { throw new TypeError( 'RandomCompat_substr(): First argument should be a string' ); } if (!is_int($start)) { throw new TypeError( 'RandomCompat_substr(): Second argument should be an integer' ); } if ($length !== null) { if (!is_int($length)) { throw new TypeError( 'RandomCompat_substr(): Third argument should be an integer, or omitted' ); } return (string) substr($binary_string, $start, $length); } return (string) substr($binary_string, $start); }