Case-insensitive strpos()

[kensai]

I need to find the position of a string in another string. But I need to do this case-insensitive so I can't use strpos(). What should I do?

[xblue]

what about casting to all lowercase or all uppercase before applying strpos()?

www.php.net/strtolower
www.php.net/strtoupper

[kensai]

I've found what I need here in comments:

function strpos_case_insensitive ($haystack, $needle, $offset=0){

 $haystack = substr($haystack, $offset, strlen($haystack) );

 $temp = stristr($haystack, $needle);
$pos = strlen($haystack) - strlen($temp);

 If ($pos == strlen ($haystack) )
   $pos = FALSE;
 else
   $pos += $offset;

 return $pos;
}