PHP code PHP code that outputs content according to the hierarchical relationship between upper and lower levels

Copy code The code is as follows:

function getSubComments($parent = 0, $level = 0) {
$db = &JFactory::getDBO();
$sql = "..."; // SQL for querying records
$db->setQuery($sql);
$rows = $db->loadObjectList();
$list = array();
// First get the record set from the data, and then compare the records Add level, parent level = 0, its subordinate level = 1, and so on
foreach ($rows as $row) {
$row->level = $level;
$list[] = $row;
$ tmpArr = getSubComments($row->id, $level + 1); // Recursive call
if (count($tmpArr)) {
foreach ($tmpArr as $tmpRow) {
$list[] = $tmpRow;
}
}
}
return $list;
}
$list = array();
foreach ($tmpList as $row) {
$row->level = 0;
$list[] = $row;
$tmpList2 = getSubComments($row->id, 1);
foreach ($tmpList2 as $row2) {
$list[] = $row2;
}
}
// Output content hierarchically by level
if ($row->level) {
$pre = '';
for ($n = 0; $n < $row->level; $n++)
$pre .= '----';
echo $pre . '|- ';
}
echo strip_tags($row->content);

The above introduces the PHP code that outputs content according to the hierarchical relationship between upper and lower levels, including the content of PHP code. I hope it will be helpful to friends who are interested in PHP tutorials.