original_string: private function stripWhitespace($source)
      {
          // Verificar se token_get_all existe
          if (! function_exists('token_get_all')) {
              return $source;
          }
  
          $output = '';
          foreach (token_get_all($source) as $token) {
              if (is_string($token)) {
                  $output .= $token;
              } elseif (in_array($token[0], [T_COMMENT, T_DOC_COMMENT])) {
                  $output .= str_repeat("\n", substr_count($token[1], "\n"));
              } elseif (T_WHITESPACE === $token[0]) {
                  // reduce wide spaces
                  $whitespace = preg_replace('{[ \t]+}', ' ', $token[1]);
                  // normalize newlines to \n
                  $whitespace = preg_replace('{(?:\r\n|\r|\n)}', "\n", $whitespace);
                  // trim leading spaces
                  $whitespace = preg_replace('{\n +}', "\n", $whitespace);
                  $output .= $whitespace;
              } else {
                  $output .= $token[1];
              }
          }
  
          return $output;
      }
code: private function stripWhitespace($source)
      {
          // Verificar se token_get_all existe
          if (! function_exists('token_get_all')) {
              return $source;
          }
  
          $output = '';
          foreach (token_get_all($source) as $token) {
              if (is_string($token)) {
                  $output .= $token;
              } elseif (in_array($token[0], [T_COMMENT, T_DOC_COMMENT])) {
                  $output .= str_repeat("\n", substr_count($token[1], "\n"));
              } elseif (T_WHITESPACE === $token[0]) {
                  // reduce wide spaces
                  $whitespace = preg_replace('{[ \t]+}', ' ', $token[1]);
                  // normalize newlines to \n
                  $whitespace = preg_replace('{(?:\r\n|\r|\n)}', "\n", $whitespace);
                  // trim leading spaces
                  $whitespace = preg_replace('{\n +}', "\n", $whitespace);
                  $output .= $whitespace;
              } else {
                  $output .= $token[1];
              }
          }
  
          return $output;
      }
code_tokens: private function stripWhitespace ( $ source ) { // Verificar se token_get_all existe if ( ! function_exists ( 'token_get_all' ) ) { return $ source ; } $ output = '' ; foreach ( token_get_all ( $ source ) as $ token ) { if ( is_string ( $ token ) ) { $ output .= $ token ; } elseif ( in_array ( $ token [ 0 ] , [ T_COMMENT , T_DOC_COMMENT ] ) ) { $ output .= str_repeat ( "\n" , substr_count ( $ token [ 1 ] , "\n" ) ) ; } elseif ( T_WHITESPACE === $ token [ 0 ] ) { // reduce wide spaces $ whitespace = preg_replace ( '{[ \t]+}' , ' ' , $ token [ 1 ] ) ; // normalize newlines to \n $ whitespace = preg_replace ( '{(?:\r\n|\r|\n)}' , "\n" , $ whitespace ) ; // trim leading spaces $ whitespace = preg_replace ( '{\n +}' , "\n" , $ whitespace ) ; $ output .= $ whitespace ; } else { $ output .= $ token [ 1 ] ; } } return $ output ; }
docstring: Removes whitespace from a PHP source string while preserving line numbers.
  
  @param  string $source A PHP string
  @return string The PHP string with the whitespace removed
docstring_tokens: Removes whitespace from a PHP source string while preserving line numbers .