TYPO3 Core

When querying a PreparedStatement without any arguments (implicitely or explicitely), such as by

$stmt = $GLOBALS['TYPO3_DB']->prepare_SELECTquery('myColumn', 'myTable', ''); // select, from, where
$stmt->execute(array());

the following PHP warning will be logged:

PHP Warning:  Wrong parameter count for mysqli_stmt::bind_param() in .../typo3_src-6.2.11/typo3/sysext/core/Classes/Database/PreparedStatement.php on line 354

The offending lines are:

   346                  // ->bind_param requires second up to last arguments as references
   347                  $bindParamArguments = array();
   348                  $bindParamArguments[] = $combinedTypes;
   349                  $numberOfExtraParamArguments = count($values);
   350                  for ($i = 0; $i < $numberOfExtraParamArguments; $i++) {
   351                          $bindParamArguments[] = &$values[$i];
   352                  }
   353
   354                  call_user_func_array(array($this->statement, 'bind_param'), $bindParamArguments);

$combinedTypes is a string assembled earlier in execute() to contain all parameter's data types. If no parameters have been passed, $combinedTypes is an empty string and (on line 354) $bindParamArguments therefore reads:

Array
(
    [0] => 
)

This appears to get mapped to an unnecessary call of PHP's mysqli_stmt::bind_param('') which should causes the logged warning.

A patch which encloses lines 350-354 in a check for $numberOfExtraParamArguments > 0 has been attached to this issue.