original_string: public static function traceBegin()
      {
          $dbg = debug_backtrace();
          $str = '=> ';
          if (!empty ($dbg[1]['class'])) {
              $str .= $dbg[1]['class'] . '::';
          }
          $str .= $dbg[1]['function'] . '(';
          if (is_array($dbg[1]['args'])) {
              foreach ($dbg[1]['args'] as $index => $arg) {
                  if ($index != 0) {
                      $str .= ', ';
                  }
                  if (is_object($arg)) {
                      $str .= get_class($arg);
                  } else {
                      $str .= str_replace(array("\r\n", "\n", "\r"), "", var_export($arg, true));
                  }
              }
          }
          if (isset($dbg[1]['file'])) {
              $file = basename($dbg[1]['file']);
          } else {
              $file = 'unknown_file';
          }
          if (isset($dbg[1]['line'])) {
              $line = $dbg[1]['line'];
          } else {
              $line = 'unknown_line';
          }
          $str .= ') [' . $file . ':' . $line . ']';
          phpCAS :: log($str);
          if (!isset(self::$_PHPCAS_DEBUG['indent'])) {
              self::$_PHPCAS_DEBUG['indent'] = 0;
          } else {
              self::$_PHPCAS_DEBUG['indent']++;
          }
      }
code: public static function traceBegin()
      {
          $dbg = debug_backtrace();
          $str = '=> ';
          if (!empty ($dbg[1]['class'])) {
              $str .= $dbg[1]['class'] . '::';
          }
          $str .= $dbg[1]['function'] . '(';
          if (is_array($dbg[1]['args'])) {
              foreach ($dbg[1]['args'] as $index => $arg) {
                  if ($index != 0) {
                      $str .= ', ';
                  }
                  if (is_object($arg)) {
                      $str .= get_class($arg);
                  } else {
                      $str .= str_replace(array("\r\n", "\n", "\r"), "", var_export($arg, true));
                  }
              }
          }
          if (isset($dbg[1]['file'])) {
              $file = basename($dbg[1]['file']);
          } else {
              $file = 'unknown_file';
          }
          if (isset($dbg[1]['line'])) {
              $line = $dbg[1]['line'];
          } else {
              $line = 'unknown_line';
          }
          $str .= ') [' . $file . ':' . $line . ']';
          phpCAS :: log($str);
          if (!isset(self::$_PHPCAS_DEBUG['indent'])) {
              self::$_PHPCAS_DEBUG['indent'] = 0;
          } else {
              self::$_PHPCAS_DEBUG['indent']++;
          }
      }
code_tokens: public static function traceBegin ( ) { $ dbg = debug_backtrace ( ) ; $ str = '=> ' ; if ( ! empty ( $ dbg [ 1 ] [ 'class' ] ) ) { $ str .= $ dbg [ 1 ] [ 'class' ] . '::' ; } $ str .= $ dbg [ 1 ] [ 'function' ] . '(' ; if ( is_array ( $ dbg [ 1 ] [ 'args' ] ) ) { foreach ( $ dbg [ 1 ] [ 'args' ] as $ index => $ arg ) { if ( $ index != 0 ) { $ str .= ', ' ; } if ( is_object ( $ arg ) ) { $ str .= get_class ( $ arg ) ; } else { $ str .= str_replace ( array ( "\r\n" , "\n" , "\r" ) , "" , var_export ( $ arg , true ) ) ; } } } if ( isset ( $ dbg [ 1 ] [ 'file' ] ) ) { $ file = basename ( $ dbg [ 1 ] [ 'file' ] ) ; } else { $ file = 'unknown_file' ; } if ( isset ( $ dbg [ 1 ] [ 'line' ] ) ) { $ line = $ dbg [ 1 ] [ 'line' ] ; } else { $ line = 'unknown_line' ; } $ str .= ') [' . $ file . ':' . $ line . ']' ; phpCAS :: log ( $ str ) ; if ( ! isset ( self :: $ _PHPCAS_DEBUG [ 'indent' ] ) ) { self :: $ _PHPCAS_DEBUG [ 'indent' ] = 0 ; } else { self :: $ _PHPCAS_DEBUG [ 'indent' ] ++ ; } }
docstring: This method is used to indicate the start of the execution of a function
  in debug mode.
  
  @return void
docstring_tokens: This method is used to indicate the start of the execution of a function in debug mode .