original_string: protected function isInlineDirective($rule)
      {
          foreach ($this->directiveArray() as $directive) {
              if (0 === strpos(mb_strtolower($rule), $directive . ':')) {
                  return $directive;
              }
          }
          return false;
      }
code: protected function isInlineDirective($rule)
      {
          foreach ($this->directiveArray() as $directive) {
              if (0 === strpos(mb_strtolower($rule), $directive . ':')) {
                  return $directive;
              }
          }
          return false;
      }
code_tokens: protected function isInlineDirective ( $ rule ) { foreach ( $ this -> directiveArray ( ) as $ directive ) { if ( 0 === strpos ( mb_strtolower ( $ rule ) , $ directive . ':' ) ) { return $ directive ; } } return false ; }
docstring: Check if the rule contains a inline directive
  
  @param  string $rule
  @return string|false
docstring_tokens: Check if the rule contains a inline directive