Loop logic problem

[ziycon]

Only 'test' is ever output, I know its something to do with the if loop but can't put my finger on the root cause, basically the string is input and exploded and each value is checked against the $permittedPlatf orms and if it is allowed then is is returned.

The input is: test,test2,blue

private function processPlatform($platformsIn) {
		$permittedPlatforms = array('test','test2','blue');
		$platforms = '';
		$permittedSize = sizeof($permittedPlatforms);
		$size = 0;
		$count = 0;
		$permittedCount = 0;

		$platformsIn = explode(",",$platformsIn);
		$size = sizeof($platformsIn);
		
		while($count < $size) {
			while($permittedCount < $permittedSize) {
				if($permittedPlatforms[$permittedCount] == $platformsIn[$count]) {
					if($platforms != '')
						$platforms .= ', '.$platformsIn[$count];
					else
						$platforms .= $platformsIn[$count];
				}
				$permittedCount++;
			}
			$count++;
		}

		return $platforms;
	}

[code green]

With a loop witin a loop you need to ensure the counts are reset to zero.

But take a look at array_intersect () which does all that work for you

[ziycon]

Spotted where I needed to reset one of the counts, thanks for your help.