thehook

I was writing a a very simple script to check if a visitor was a bot. Therefore I made an array of words used by bots, and soon found out that PHP got a function to check a string in an array, but not an array in a string. So I wrote a simple function, maybe someone else needs it?

// PHP Function to check if any value in an array is in a string
//
function isin_string($string, $array) {
        foreach ($array as $value) {
                if (!stristr($string, $value) === FALSE) {
                        // value is found
                        return true;
                } else {
                        // value not found
                        return false;
                }
        }
}

Or in a simpler way just implode() the array and use strrpos()

function string_in_array($string, $array) {
    $array = implode(" ", $array);
    if strrpos($array, $string) {
        // String is found
        return true;
    } else {
        // String was NOT found
        return false;
    }
}