如何在 PHP 中不使用 foreach 用键和值内爆数组 [英] How to implode array with key and value without foreach in PHP

问题描述

没有 foreach,我怎样才能像这样转动一个数组

Without foreach, how can I turn an array like this

array("item1"=>"object1", "item2"=>"object2",......."item-n"=>"object-n");

到这样的字符串

item1='object1', item2='object2',.... item-n='object-n'

我已经考虑过 implode()，但它并没有用它来内爆密钥.

I thought about implode() already, but it doesn't implode the key with it.

如果需要foreach，是否可以不嵌套foreach?

If foreach it necessary, is it possible to not nest the foreach?

我已经更改了字符串

EDIT2/更新:这个问题很久以前就被问到了.那时，我想将所有内容都写在一行中，因此我会使用三元运算符并嵌套内置函数调用以支持 foreach.这不是一个好习惯！写出可读性强的代码，简洁与否无所谓.

EDIT2/UPDATE: This question was asked quite a while ago. At that time, I wanted to write everything in one line so I would use ternary operators and nest built in function calls in favor of foreach. That was not a good practice! Write code that is readable, whether it is concise or not doesn't matter that much.

在这种情况下:将 foreach 放在函数中将比编写单行代码更具可读性和模块化(即使所有答案都很棒！).

In this case: putting the foreach in a function will be much more readable and modular than writing a one-liner(Even though all the answers are great!).

推荐答案

和另一种方式:

$input = array(
    'item1'  => 'object1',
    'item2'  => 'object2',
    'item-n' => 'object-n'
);

$output = implode(', ', array_map(
    function ($v, $k) {
        if(is_array($v)){
            return $k.'[]='.implode('&'.$k.'[]=', $v);
        }else{
            return $k.'='.$v;
        }
    }, 
    $input, 
    array_keys($input)
));

或:

$output = implode(', ', array_map(
    function ($v, $k) { return sprintf("%s='%s'", $k, $v); },
    $input,
    array_keys($input)
));

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