<?php
 
function checkstrling($input, $substring) 
{
    if (strpos($input, $substring) !== false) {
       return 2;
    }
    foreach (str_split($substring) as $char) {
        if (strpos($input, $char) === false) {
            return 0;
        }
    }
    return 1;
}
 
print checkstrling("xgolensssx","golden");              // 0
print checkstrling("abcgxyommlgdqqesn","golden");       // 1
print checkstrling("xgoldensssx","golden");             // 2
 
print checkstrling("somegxoxdxlxnmme","golden");        // 1
print checkstrling("somegxoxlxdxemnmgoldenv","golden"); // 2

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