php - 按键显示数组顺序的最佳方式

Question

<?php
$array = array(
    "1" => 'Hi',
    "4" => 'are',
    "3" => 'How',
    "7" => 'my',
    "6" => 'you',
    "9" => 'brother',
);

forEach($array as $key => $value) {
    echo $key;
    echo ':-';
    print_r($value);
    echo '<br/>';
}
?>

这段代码的输出是

1:-Hi
4:-are
3:-How
7:-my
6:-you
9:-brother

但我需要按键显示这个订单。请告诉我哪种方法最简单

谢谢

Answer 1

使用ksort

ksort($array);

foreach($array as $key => $value) {
    echo $key;
    echo ':-';
    print_r($value);
    echo '<br/>';
}