最佳方式按键显示数组顺序

问题描述：

<?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/>';
}
?>

the out put of this code is

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

but i need to display this order by key. please tell me which is easiest way

thanks

 ＆lt;？php 
 $ array = array（
“1”=＆gt;'嗨 '，
“4”=＆gt;'是'，
“3”=＆gt;'如何'，
“7”=＆gt;'我'，
“6”=＆gt;'你'，  
“9”=＆gt;'兄弟'，
）; 
 
forEach（$ array as $ key =＆gt; $ value）{
 echo $ key; 
 echo'： - '; 
 print_r  （$ value）; 
 echo'＆lt; br /＆gt;'; 
} 
？＆gt; 
  code>  pre> 
 
 此代码的输出为 
 
 
  1：嗨\ N4：-are \ N3： - 如何\ N7：-My \ N6：-you \ N9：-brother 
 代码>   pre> 
 
 但我需要按键显示此顺序。 请告诉我哪种方式最简单 p> 
 
 
谢谢 p> 
  div>

答

Use ksort

ksort($array);

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

答

The nice thing about PHP is that there's a function for everything. You can use the ksort function to sort the array by its keys: http://php.net/manual/en/function.ksort.php

Your new code would look like this:

<?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/>';
}
?>

答

use ksort(), this will arrange it by key order.

<?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

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