如何使用键和值展开多维数组

Question

我有一个类似这样的字符串：

$string = Leader,Brian; Elder,Nina,Maria; Member,Duke,Rai,Mike

我所做的事情：

$explode = ("; ", $string);

然后它会显示为：

Array ([0] => Leader,Brian [1] => Elder,Nina,Maria [2] => Member,Duke,Rai,Mike)

但我不喜欢那样。我想要创建一个带有键和值的多维数组，就像这样：

Array ([Leader] => Brian [Elder] => Array ([0] => Nina [1] => Maria) 
       [Member] => Array ([0] => Duke [1] => Rai [2] => Mike))

如何在HTML的表格标签中展示它呢？

Leader  |  Brian
Elder   |  Nina
        |  Maria
Member  |  Duke
        |  Rai
        |  Mike 

NB：如果分隔符很难用，请在字符串中更改分隔符。

- Stfvns

---

可能是https://dev59.com/tmYq5IYBdhLWcg3w30Tc的重复问题。 - Gokul Shinde

Answer 1

您的 explode 是很好的第一步。

接下来要做的是迭代其结果并再次执行 explode。 然后（在相同的循环中）将第二个 explode 的结果的第一个元素用作键，其余部分用作值。

$string = "Leader,Brian; Elder,Nina,Maria; Member,Duke,Rai,Mike";

$exploded = explode("; ", $string);

foreach($exploded as $element) {
    $arr = explode(',', $element);

    $result[array_shift($arr)] = $arr;
}

var_dump($result);

结果：

array(3) {
  ["Leader"]=>
  array(1) {
    [0]=>
    string(5) "Brian"
  }
  ["Elder"]=>
  array(2) {
    [0]=>
    string(4) "Nina"
    [1]=>
    string(5) "Maria"
  }
  ["Member"]=>
  array(3) {
    [0]=>
    string(4) "Duke"
    [1]=>
    string(3) "Rai"
    [2]=>
    string(4) "Mike"
  }
}

- Jakub Matczak

---

请问您能展示一下它在HTML标签表中的样子吗？谢谢。 - Stfvns

Answer 2

我会先将字符串拆分后遍历数组，然后再次拆分：

$list = explode("; ", $string);
array_walk($list, function(&$element) {
    $names = explode(',', $element);
    // Take the first item off the array type
    $type = array_shift($names);
    // Alter the array in-place to create the sub-array
    $element = [$type => $names]
});

- Matt S

Answer 3

你需要两个“explode”函数

$string = 'Leader,Brian; Elder,Nina,Maria; Member,Duke,Rai,Mike';
$explode = explode("; ", $string);
foreach($explode as $row){
    $explode2 = explode(",", $row);
    foreach($explode2 as $i=>$p ){

        echo ( $i > 0 )?"\n\t|":"\n";
        echo $p;
    }
}

- cmnardi

Answer 4

你需要进行两次分割 - 在你的两个分隔符上，例如：

<?php
$string = "Leader,Brian; Elder,Nina,Maria; Member,Duke,Rai,Mike";

$result = array();
$parts = explode(";", $string);

foreach ($parts as $part)
{
    $kv = explode(",", $part);
    $result[array_shift($kv)] = $kv;
}

// result:
echo '<pre>';
print_r($result);
echo '</pre>';
?>

会给你：

Array
(
    [Leader] => Brian
    [Elder] => Nina
    [Member] => Duke
)

- Stuart

Answer 5

这应该可以：

<?php
$string = 'Leader,Brian; Elder,Nina,Maria; Member,Duke,Rai,Mike';

$explode = array_map(function($v){return explode(',', $v);}, explode(';', $string));

$new_array = [];

foreach($explode as $k=>$v)
{
    $v[0] = trim($v[0]);

    $new_array[$v[0]] = $v;

    unset($new_array[$v[0]][0]);

    $new_array[$v[0]] = array_values($new_array[$v[0]]);
}

print_r($new_array);

- MonkeyZeus