php连接数组的两个元素答案

【问题标题】：php join two elements of arrayphp连接数组的两个元素
【发布时间】：2015-06-12 21:39:41
【问题描述】：

我有这个数组

$MyArray[0]=Array("id"=>1,"name"=>prophet,"family"=>muhammad);
$MyArray[1]=Array("id"=>1,"name"=>imam,"family"=>ali);
$MyArray[2]=Array("id"=>1,"name"=>imam,"family"=>hossein);

我只想将name 和family 合并到fullName？

我想要这样

$MyArray[0]=Array("id"=>1,"name"=>prophet,"family"=>muhammad,"fullName"=>"prophet muhammad");
$MyArray[1]=Array("id"=>1,"name"=>imam,"family"=>ali,"fullName"=>"imam ali");
$MyArray[2]=Array("id"=>1,"name"=>imam,"family"=>hossein,"fullName"=>"imam hossein");

我可以使用这段代码

$count=0;
foreach($MyArray as $R)
{            
    $result[$count++]=array("name"=>$R["name"],"family"=>$R["family"],"fullName"=>$R["name"]." ".$R["family"]);
}
var_dump($result);

Online Demo

有更好的方法吗？

【问题讨论】：

标签： php arrays string algorithm multidimensional-array

【解决方案1】：

只需在您当前的数组结构中分配一个新的密钥对值。一个简单的 foreach 就足够了：

$MyArray[0]=Array("id"=>1,"name"=>"prophet","family"=>"muhammad");
$MyArray[1]=Array("id"=>1,"name"=>"imam","family"=>"ali");
$MyArray[2]=Array("id"=>1,"name"=>"imam","family"=>"hossein");

foreach($MyArray as &$arr) {
                  // ^ reference
    $arr['fullName'] = "{$arr['name']} {$arr['family']}";
    //   ^ new key       ^ new value assignment
}

Sample Output

【讨论】：

【解决方案2】：

您可以像这样在代码中使用array_map()：

<?php

$MyArray[0]=Array("id"=>1,"name"=> "prophet", "family"=> "muhammad");
$MyArray[1]=Array("id"=>1,"name"=> "imam", "family"=> "ali");
$MyArray[2]=Array("id"=>1,"name"=> "imam", "family"=> "hossein");

$array = array_map(function($n) {$n['fullName'] = $n['name'] . ' ' . $n['family']; return $n;}, $MyArray);

print_r($array);

输出：

Array
(
    [0] => Array
        (
            [id] => 1
            [name] => prophet
            [family] => muhammad
            [fullName] => prophet muhammad
        )

    [1] => Array
        (
            [id] => 1
            [name] => imam
            [family] => ali
            [fullName] => imam ali
        )

    [2] => Array
        (
            [id] => 1
            [name] => imam
            [family] => hossein
            [fullName] => imam hossein
        )

)

阅读更多：

http://php.net/array_map

【讨论】：

【解决方案3】：

$MyArray[0]=Array("id"=>1,"name"=>prophet,"family"=>muhammad);
$MyArray[1]=Array("id"=>1,"name"=>imam,"family"=>ali);
$MyArray[2]=Array("id"=>1,"name"=>imam,"family"=>hossein);
$count = count($MyArray);
for ($i = 0; $i < $count; $i++) {
    $MyArray[$i]['fullName'] = $MyArray[$i]['name'] . ' ' . $MyArray[$i]['family'];
}
print_r($MyArray);

【讨论】：

【解决方案4】：

您可以通过使用 foreach 循环来做到这一点。这是一个例子。

$MyArray[0]=Array("id"=>1,"name"=>prophet,"family"=>muhammad);
$MyArray[1]=Array("id"=>1,"name"=>imam,"family"=>ali);
$MyArray[2]=Array("id"=>1,"name"=>imam,"family"=>hossein);

foreach($MyArray as $key=>$myarray){
     $MyArray[$key]["fullName"] = $myarray["name"]." ".$myarray["family"];
}

【讨论】：