使用PHP基于关联数组的键更改一个数组中的值

Question

我希望我的问题能够充分描述我所追求的......

情况如下。我有以下带有值的数组。

categories['t-shirts'] = 10
categories['shorts'] = 11
...

clothing[0] = 't-shirts'
clothing[1] = 'shorts'
...

我想将衣服数组（T恤，短裤）中的值替换为来自categories数组的数字。

干杯

Answer 1

foreach($clothing as $key => $val){
    if(isset($categories[$val])){
         $clothing[$key] = $categories[$val];
    }
}

Codepad Example

Answer 2

你可以使用简单的php

categories[clothing[0]] = "some value"

Answer 3

从你的问题来看，它看起来像是

$newArray=array_keys($originalArray);

应该这样做。

Answer 4

$count = count($clothing);
for($i=0; $i<$count; $i++)
    $clothing[$i] = (array_key_exists($clothing[$i], $categories))
        ? $categories[$clothing[$i]] : 0;

用于设置$ clothes而不计数为0

Answer 5

$categories = array();
$categories['t-shirts'] = 10;
$categories['shorts'] = 11;

$clothing = array();
$clothing[0] = 't-shirts';
$clothing[1] = 'shorts';

array_walk($clothing,
           function(&$value) use($categories) {
               if (isset($categories[$value]))
                   $value = $categories[$value];
           }
);
var_dump($clothing);