Lines Matching refs:is_null
23 while (!is_null($current_box) &&
53 while (!is_null($current_box) &&
83 while (!is_null($current_box) &&
131 $is_last = !is_null($last) && $this->uid == $last->uid;
133 if (!is_null($last) &&
191 …if (is_null($parent_first) || // Unfortunately, we sometimes get null as a value of $parent_first;…
537 if (is_null($parent)) {
555 while ((!is_null($parent->parent)) &&
588 if (is_null($parent)) {
592 while (!is_null($parent->parent) &&
910 function is_null() { function in GenericFormattedBox
991 if (!is_null($top_value)) {
993 } elseif (!is_null($bottom_value)) {
1030 if (!is_null($left_value)) {
1032 } elseif (!is_null($right_value)) {