PHP strpos(), echoing instances found

Question

Using the strpos() function in PHP, how can I echo what strpos() has found? All items that it has found. Thanks

Answer 1

strpos finds is what you tell it to find, so in essense you're asking this:

$needle="foo";
if (strpos($haystack, $needle)!==false)
{
    echo $needle;
}

Maybe you actually want to do something else?

Answer 2

strpos() only returns the first needle found in the haystack. If you need to find all of them, you can do something like this :

$str = "abcabcabc";
$arr = array();
$delChar = 0;

while (($pos = strpos($str, "a")) !== false) {
    $arr[] = $pos + $delChar;
    $delChar += strlen($str) - strlen(substr($str, $pos + 1));
    $str = substr($str, $pos + 1);
}

var_dump($arr);

which prints 0, 3 and 6.

Edit: I just read the comments, I assumed you meant the positions the function found, maybe I was wrong :-p