Mengurutkan angka dengan sort dan rsort PHP

<?php
$acak = array(217, 78, 575, 221, 596, 731, 836, 494, 950,617);
//echo $acak[];
$panjang = count ($acak);
echo "Bilangan Acak : ";
for ($i=0; $i<$panjang; $i++)
{
echo "$acak[$i] ","";
}
echo "<br>";
sort($acak);
echo "Bilangan Ascending : ";
for ($j=0; $j<$panjang; $j++)
{
echo "$acak[$j] ","";
}
echo "<br>";
rsort($acak);
echo "Bilangan Urut Descending : ";
for ($j=0; $j<$panjang; $j++)
{
echo "$acak[$j] ","";
}
?>

Maka akan menampilkan output
Bilangan Acak : 217 78 575 221 596 731 836 494 950 617
Bilangan Ascending : 78 217 221 494 575 596 617 731 836 950
Bilangan Urut Descending : 950 836 731 617 596 575 494 221 217 78

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