This is my table
parentID id
1 0
1 2
3 4
2 3
4 5
5 6
6 7
7 8
8 9
9 10
This is my php code---->
function countChildren($parentId) {
$link=mysql_connect("localhost","root","");
mysql_select_db("employee",$link);
$sql = ("select id from relation where parentID='2'");
$result=mysql_query($sql,$link);
$count = mysql_num_rows($result);
$userinfo = array();
while ($row_user = mysql_fetch_assoc($result))
{
$userinfo[] = $row_user;
}
foreach($userinfo as $userId)
{
$count += countChildren($userId);
}
return $count;
}
Now i want to count all the child nodes of a parent node using the above code but my code is give error like -->
Fatal error: Maximum function nesting level of '100' reached, aborting! in C:\\wamp\\www\\Project\\index.php on line 7
Just do the counting in the query and pass the parent_id as an input. Use prepared statements .
// ....
$stmt = $db->prepare("SELECT COUNT(*) childrenCount FROM relation WHERE parentID=?");
$parentID = '2'
$sth->execute(array($parentID));
// fetch the result here
$stmt->close();
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