Boolean string search function?

[frigidman]

Is there a function wich accurately returns TRUE or FALSE if one string exists in a given string?

ex:
$mystring = "This contains an X";
if(in_string('X',$mystring))
echo "true";
else
echo "false";

And of course, it would return true.

Anything like that? Right now I use this:

if (strpos($mystring,'X') > -1)...

Works... but is a hack, and lame if PHP already has a function that does this... My searches on php.net and here yielf no luck.

[toma42]

Because a non-empty string is true, I sometimes use:

$found = (strstr($string, $search));