/**
* Workaround for groupconcat 'bug': when the groupconcat is based on a left join, the resulting array can
* contain 1 (empty) element while you would expect is has 0 elements.
* This function checks for this special case, and ensures that $array is empty
*/
public static function fixGroupConcatArray(&$array)
{
if (!is_array($array)) {
return;
}
if (count($array) != 1) {
return;
}
Arrays::reduceNulls($array[0]);
if (is_null($array[0])) {
$array = array();
}
}
