根据另一个数组，首先对一个数组中的值进行排序

Question

我希望首先根据另一个数组的顺序来排序值。

$countries = explode(',', 'AF,AL,DZ,AS,AD,FR,AO,AI,AQ,GB');
$popular   = explode(',', 'FR,GB');

我来自$countries，我希望将$popular中定义的值组成以下数组：

$ordered = ['GB,FR,AF,AL,DZ,AS,AD,AO,AI,AQ']

谢谢

- gold82

---

你需要编写自定义代码来完成这个任务。 - Bilal Ahmed

Answer 1

您可以使用array_merge和array_diff

查看工作演示：：https://eval.in/873974

$countries = explode(',', 'AF,AL,DZ,AS,AD,FR,AO,AI,AQ,GB');
$popular   = explode(',', 'FR,GB');
sort($popular); // sort to manage order

// remove common element from $countries and merge with $popular
$ordered = array_merge($popular,array_diff($countries, $popular));     
echo "<pre>";
print_r($ordered);

- Jigar Shah

Answer 2

试试这段代码

<?php 
        $arr= array();
        $countries = explode(',', 'AF,AL,DZ,AS,AD,FR,AO,AI,AQ,GB');
        $popular   = explode(',', 'FR,GB');
        $total_popular = count($popular);
        $total_countries = count($countries);

        for ($i=0; $i < $total_popular; $i++) { 
            if (in_array($popular[$i], $countries)) {
                $arr[]=$popular[$i];
            }
        }
        for ($j=0; $j < $total_countries; $j++) { 
            if (! in_array($countries[$j], $arr)) {
                $arr[]=$countries[$j];
            }
        }
        echo "<pre>";
        print_r($arr);

        ?>

您希望此代码的输出为：

- Bilal Ahmed