$array = array("php"=>-3, "c"=>-12, "c++"=>-7, "python"=>-18, "java"=>-11);
asort($array, SORT_NUMERIC);
$array = array_reverse($array, true);
foreach ($array as $key => $value) {
echo $key . " " . $value . "\n";
}
/*
run:
php -3
c++ -7
java -11
c -12
python -18
*/