original_string: public function delete($key)
      {
          $filePath = $this->getFilePathFromKey($key);
  
          if (!file_exists($filePath)) {
              return false;
          }
  
          return unlink($filePath);
      }
code: public function delete($key)
      {
          $filePath = $this->getFilePathFromKey($key);
  
          if (!file_exists($filePath)) {
              return false;
          }
  
          return unlink($filePath);
      }
code_tokens: public function delete ( $ key ) { $ filePath = $ this -> getFilePathFromKey ( $ key ) ; if ( ! file_exists ( $ filePath ) ) { return false ; } return unlink ( $ filePath ) ; }
docstring: Remove a value from the cache.
  
  @param string $key
  
  @return bool
docstring_tokens: Remove a value from the cache .