Tetris-ing an array

Question

Consider the following array:

/www/htdocs/1/sites/lib/abcdedd
/www/htdocs/1/sites/conf/xyz
/www/htdocs/1/sites/conf/abc/         


        

Answer 1

Well, there are already some solutions here but, just because it was fun:

$values = array(
    '/www/htdocs/1/sites/lib/abcdedd',
    '/www/htdocs/1/sites/conf/xyz',
    '/www/htdocs/1/sites/conf/abc/def', 
    '/www/htdocs/1/sites/htdocs/xyz',
    '/www/htdocs/1/sites/lib2/abcdedd' 
);

function findCommon($values){
    $common = false;
    foreach($values as &$p){
        $p = explode('/', $p);
        if(!$common){
            $common = $p;
        } else {
            $common = array_intersect_assoc($common, $p);
        }
    }
    return $common;
}
function removeCommon($values, $common){
    foreach($values as &$p){
        $p = explode('/', $p);
        $p = array_diff_assoc($p, $common);
        $p = implode('/', $p);
    }

    return $values;
}

echo '
';
print_r(removeCommon($values, findCommon($values)));
echo '
';

Output:

Array
(
    [0] => lib/abcdedd
    [1] => conf/xyz
    [2] => conf/abc/def
    [3] => htdocs/xyz
    [4] => lib2/abcdedd
)