[TYPO3-ect] recursive pid function for tx_div

[Steve Ryan]

You're right. static declaration can be inside function. tidier. somehow
i had problems when I first tried inside the function.... somehow.

	
a better tested example closer to div naming.

In a test controller

require_once(t3lib_extMgm::extPath('div') . 'class.tx_div2.php');

and

function defaultAction() {
debug(array('finallist',tx_div2::pidListRecursive($this->parameters->get('pid'),'3')));
}	

with the extra file in div extension ->  class.tx_div2.php containing

<?

class tx_div2 {
   	static function findCObjectSingleton() {
		
		static $cObj ;
		
		if(!is_object($cObj)) {
			$cObj=t3lib_div::makeInstance('tslib_cObj');
			debug(array('creating cobj'));
		}
		debug(array('returning cobj'));
		return $cObj;
	
	}

	static function pidListRecursive($pidList,$recursive) {
	    // ensure array format
	    if (!is_array($pidList)) {
		    $pidList=explode(',',$pidList);
	    }
	    debug(array($pidList,$recursion));
	    // dump when recursion reaches 0
	    if ($recursive==0) {
		    return $pidList;
	    } else {
		// prep unique array
		$unique=array();
		foreach ($pidList as $thispid) {
			// check for +ve integer
			if ($thispid>0) $unique[$thispid]=$thispid;	
		}
		$newTally=0;
		if (count($unique)>0) {
			debug('next level');
	
			// get next level of pids
			$pidQuery='(pid='.implode(' or pid=',array_keys($unique)).')';
			$cObj=tx_div2::findCObjectSingleton();
			$query=$pidQuery.$cObj->enableFields('pages');
		
$res=$GLOBALS['TYPO3_DB']->exec_SELECTquery('uid,pid','pages',$query,'','','');
			while ($row=$GLOBALS['TYPO3_DB']->sql_fetch_assoc($res)) {
				$unique[$row['uid']]=$row['uid'];
				$newTally++;
			}
			
			// no results, bail on recursion now
			if ($newTally>0) { 	
				return tx_div2::pidListRecursive(array_keys($unique),$recursive-1);
			} else {
				return array_keys($unique);
			}
		} else {
			return array();
		}
	    }
}
}

?>


----------------------
RESULT
0	
0	1
1	
|next level|
0	creating cobj
0	returning cobj
0	
0	1
1	273
2	263
3	262
4	261
5	259
6	252
38	15
39	12
40	5
41	27
1	
|next level|
0	returning cobj
0	
0	1
1	273
2	263
3	262
4	261
.
.
etc
.
.
.