original_string: public static function mb_substr_replace($original, $replacement, $position, $length)
      {
          $startString = mb_substr($original, 0, $position, "UTF-8");
          $endString = mb_substr($original, $position + $length, mb_strlen($original), "UTF-8");
  
          return $startString . $replacement . $endString;
      }
code: public static function mb_substr_replace($original, $replacement, $position, $length)
      {
          $startString = mb_substr($original, 0, $position, "UTF-8");
          $endString = mb_substr($original, $position + $length, mb_strlen($original), "UTF-8");
  
          return $startString . $replacement . $endString;
      }
code_tokens: public static function mb_substr_replace ( $ original , $ replacement , $ position , $ length ) { $ startString = mb_substr ( $ original , 0 , $ position , "UTF-8" ) ; $ endString = mb_substr ( $ original , $ position + $ length , mb_strlen ( $ original ) , "UTF-8" ) ; return $ startString . $ replacement . $ endString ; }
docstring: Multibyte compatible substr_replace
  
  @param string $original
  @param string $replacement
  @param int $position
  @param int $length
  @return string
docstring_tokens: Multibyte compatible substr_replace