php数组排序算法新手练习

$array = array('one'=>200, 'three'=>150, 'four'=>100, 'two'=>230);
$ka=array_keys($array);
$count=count($ka);
for($i=0;$i<$count-1;$i++){
    for($j=0;$j<$count-$i-1;$j++){
        if($array[$ka[$j]]>$array[$ka[$j+1]]){
            $temp=$ka[$j];
            $ka[$j]=$ka[$j+1];
            $ka[$j+1]=$temp;
        }
    }
}
for($i=0;$i<$count;$i++){
    $asort["$ka[$i]"]=$array[$ka[$i]];
}
print_r($asort);
?>

$array = array('one'=>200, 'three'=>150, 'four'=>100, 'two'=>230);
$values = array_values($array);
do {
    $cur = min($values);
    #$cur = max($values);
    $key = array_search($cur,$array);
    if ($key === false) {
        break;
    }
    $result[$key] = $cur;
    unset($array[$key]);
    unset($values[array_search($cur,$values)]);
} while (count($values)>0);
var_dump($result);
?>