Good alternative to eregi() in PHP

Question

I often find myself doing quick checks like this:

if (!eregi(\'.php\', $fileName)) {
    $filename .= \'.php\';
}

But as eregi() was deprec

Answer 1

stristr achieves exactly the same result as eregi (at least when you don't use regular expressions):

if (!stristr($fileName, '.php'))
    $filename.='.php';

You could also make a "fake" eregi this way:

if (!function_exists('eregi')) {
    function eregi($find, $str) {
        return stristr($str, $find);
    }
}

Update: Note that stristr doesn't accept regular expressions as eregi does, and for this specific case (checking the extension), you'd better go with vartec's solution.