Need a little help finding a substring

[progphp]

Hi,
I’m looking for array elements which contain a substring. Can someone help me understand why strpos will not find anything but an exact match? Thanks. Below is some sample code.

$data = array("ad1", "d2", "-d3");
$filters= array("d1");
$result=$filters[0]." Not Found";

foreach($data as $d){
	echo $d,", ";
	foreach($filters as $f){
		if(stripos($f,$d)!==false)
		{
			$result="found ".$f;
		}
	}
}
echo $result;

this exact code echoed out: ‘ad1, d2, -d3, d1 Not Found’

[progphp]

Just a note if you are copying and pasting into something like PHPTester.

The array elements need to be single quotes. I tried copying from this page back into PHPTester and I got warnings about using constants. So somehow pasting into this site or the other changed the quote types.

[progphp]

$data = array(“ad1”, “d2”, “-d3”); $filters= array(“d1”); $result=$filters[0]." Not Found"; foreach($data as $d){ echo $d,", "; foreach($filters as $f){ if(stripos($f,$d)!==false) { $result="found ".$f; } } } echo $result;

worked it out, but it seems backwards. its needle/haystack. I was looking for a needle in a haystack. It seems I need to look for a haystack in a needle, lol.