Question about strpos: how to get 2nd occurrence of a string?

Question

I understand that this function will get the first occurrence of the string.

But what I want is the 2nd occurrence.

How to go about doing that?

Answer 1

The recursive function from Smokey_Bud was slowing my script drastically down. Using a regular expression is much faster in this case (for finding any occurence):

function strposX($haystack, $needle, $number)
{
    // decode utf8 because of this behaviour: https://bugs.php.net/bug.php?id=37391
    preg_match_all("/$needle/", utf8_decode($haystack), $matches, PREG_OFFSET_CAPTURE);
    return $matches[0][$number-1][1];
}

// get position of second 'wide'
$pos = strposX('Hello wide wide world', 'wide', 2);