PHP code to output content according to the hierarchical relationship between upper and lower levels_PHP tutorial

Copy code The code is as follows:

function getSubComments($parent = 0, $level = 0) {
$db = &JFactory ::getDBO();

$sql = "..."; // SQL query for records
$db->setQuery($sql);
$rows = $db- >loadObjectList();

$list = array();

// First get the record set from the data, then add a level to the record, the 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);

http://www.bkjia.com/PHPjc/322255.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/322255.htmlTechArticleCopy the code as follows: function getSubComments($parent = 0, $level = 0) { $db = $sql = "..."; // Query the SQL of the record $db-setQuery($sql); $rows = $db-loadObjectList(); $list = ar...