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HomeBackend DevelopmentPHP Tutorial数组有关问题 求大侠给个方法

数组问题 求大侠给个方法
$a = Array
(
    [0] => 3
    [1] => 1
    [2] => 2
    [3] => 7
)

$b = Array
(
    [1] => Emross War
    [2] => Roman Empire
    [3] => Avalon Wars
    [7] => 掌上三国
    [9] => 罗马(91)
    [10] => Space Dominions
    [11] => 腾讯三国
    [12] => Vampire War
    [15] => 三国英雄传
    [17] => 掌上水浒
)
$a数组中的值是$b 的键值

那我如何得到
$c = Array
(
    [1] => Emross War
    [2] => Roman Empire
    [3] => Avalon Wars
    [7] => 掌上三国
)

求大侠给个答案

php 数组
------解决方案--------------------
$a = Array<br />(<br />    0 => 3,<br />    1 => 1,<br />    2 => 2,<br />    3 => 7<br />);<br /><br />$b = Array<br />(<br />    1 => 'Emross War',<br />    2 => 'Roman Empire',<br />    3 => 'Avalon Wars',<br />    7 => '掌上三国',<br />    9 => '罗马(91)',<br />    10 =>'Space Dominions',<br />    11 =>'腾讯三国',<br />    12 =>'Vampire War',<br />    15 =>'三国英雄传',<br />    17 =>'掌上水浒'<br />);<br />foreach($a as $k){<br />     $c[$k]=$b[$k];<br />}<br />ksort($c);<br />print_r($c);

------解决方案--------------------
sort($a); // 将数组 $a 按值升序排列<br />$c = array(); //定义一个结果数组<br />foreach($a as $k) { // 依次从数组 $b 中取值<br />  $c[$k] = $b[$k];<br />}

------解决方案--------------------
<br><br>$a = Array<br>(<br>    '0' => 3,<br>    '1' => 1,<br>    '2' => 2,<br>    '3' => 7<br>);<br><br>$b = Array<br>(<br>    '1' => 'Emross War',<br>    '2' => 'Roman Empire',<br>    '3' => 'Avalon Wars',<br>    '7' => '掌上三国',<br>    '9' => '罗马(91)',<br>    '10' => 'Space Dominions',<br>    '11' => '腾讯三国',<br>    '12' => 'Vampire War',<br>    '15' => '三国英雄传',<br>    '17' => '掌上水浒',<br>);<br>$c = array_flip($a);				//array_flip -- 交换数组中的键和值<div class="clear">
                 
              
              
        
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