SqlParser\UtfString::length PHP Метод

    public function length()
    {
        return $this->charLen;
    }

 /**
  * Gets the starting position of each line.
  *
  * @param string $str String to be analyzed.
  *
  * @return array
  */
 public static function getLines($str)
 {
     if (!$str instanceof UtfString && defined('USE_UTF_STRINGS') && USE_UTF_STRINGS) {
         // If the lexer uses UtfString for processing then the position will
         // represent the position of the character and not the position of
         // the byte.
         $str = new UtfString($str);
     }
     // The reason for using the '8bit' parameter is that the length
     // required is the length in bytes, not characters.
     //
     // Given the following string: `????+`, where `?` represents a
     // multi-byte character (lets assume that every `?` is a 2-byte
     // character) and `+` is a newline, the first value of `$i` is `0`
     // and the last one is `4` (because there are 5 characters). Bytes
     // `$str[0]` and `$str[1]` are the first character, `$str[2]` and
     // `$str[3]` are the second one and `$str[4]` is going to be the
     // first byte of the third character. The fourth and the last one
     // (which is actually a new line) aren't going to be processed at
     // all.
     $len = $str instanceof UtfString ? $str->length() : mb_strlen($len, '8bit');
     $lines = array(0);
     for ($i = 0; $i < $len; ++$i) {
         if ($str[$i] === "\n") {
             $lines[] = $i + 1;
         }
     }
     return $lines;
 }