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/>';
}
?>

此代码的输出是

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

但我需要按键显示此顺序。请告诉我哪种方式最简单

感谢

Answer 1

使用ksort

ksort($array);

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

Answer 2

关于PHP的好处是，它有一个功能。您可以使用ksort函数按键对其进行排序：http://php.net/manual/en/function.ksort.php

您的新代码如下所示：

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

ksort($array);

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

Answer 3

使用ksort()，这将按键顺序排列。

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

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

最佳方式按键显示数组顺序

3 个答案: