original_string: protected function trim_headers() {
          foreach ($this->headers as $i => $h) {
              $h = trim($h); // Remove whitespace.
              $h = clean_param($h, PARAM_RAW); // Clean the header.
              $this->headers[$i] = $h;
          }
      }
code: protected function trim_headers() {
          foreach ($this->headers as $i => $h) {
              $h = trim($h); // Remove whitespace.
              $h = clean_param($h, PARAM_RAW); // Clean the header.
              $this->headers[$i] = $h;
          }
      }
code_tokens: protected function trim_headers ( ) { foreach ( $ this -> headers as $ i => $ h ) { $ h = trim ( $ h ) ; // Remove whitespace. $ h = clean_param ( $ h , PARAM_RAW ) ; // Clean the header. $ this -> headers [ $ i ] = $ h ; } }
docstring: Cleans the column headers from the CSV file.
docstring_tokens: Cleans the column headers from the CSV file .