Re: Nested database loops and completing an unordered list....

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On 03/01/2012 04:39 PM, Jay Blanchard wrote:

On Mar 1, 2012, at 6:36 PM, Jay Blanchard wrote:


I am getting close, but I am also getting frustrated. I probably need to walk away for a bit.

I have an array of tiers….

    [0] =>  TIER1DATA
    [1] =>  TIER2DATA
    [2] =>  TIER3DATA
    [3] =>  BUSTIER1DATA
    [4] =>  BUSTIER2DATA
    [5] =>  BUSTIER3DATA
    [6] =>  BUSTIER4DATA
Each of the tiers which represent parents in children in pairs. TIER1DATA is the parent of TIER2DATA, etc. representing 7 columns of data. Here is my code so far - any insight would be valuable and extremely appreciated by me.

function display_children($i, $child) {
	global $dbc;
	global $tierArray;
	echo $i."<br />";
	/* retrieve children of parent */
	$get = "SELECT DISTINCT `". $tierArray[$i] ."` FROM `POSITION_SETUP` ";
	$get .= "WHERE `COMPANY_ID` = '3' ";
	if($i>  0) {
		$get .= "AND `" . $tierArray[$i - 1] . "` = '" . $child . "' ";
	echo $get."<br />";
	if(!($result = mysql_query($get, $dbc))) {
		echo mysql_errno() . "\t" . mysql_error() . "\n";
	while($row = mysql_fetch_array($result)) {
		/* indent and display the title of this child */
		echo str_repeat('&nbsp;',$i).$row[$tierArray[$i]]."<br />\n";
		/* get the children's children */
		display_children($i + 1, $row[$tierArray[$i]]);

It does produce the right query for only the first child in each case, I cannot get it to go deeper. I have just been looking at it for too long. TVMIA!

Forgot to say that if I isolate any one level without recursion I get all of the results for that level.

How are you calling this?  What are your initial arguments?

What does your DB schema look like?

Can you show a brief example of the data in the table?
  Dump: SELECT * FROM position_setup WHERE company_id='3'

Can you show the output of the function above?

Jim Lucas

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