PHP 使用 array_push 向多维数组添加元素

问题描述

我有一个多维数组 $md_array，我想向来自从表中读取数据的循环的子数组 recipe_type 和美食添加更多元素.

I have a multidimensional array $md_array and I want to add more elements to the sub-arrays recipe_type and cuisine coming from a loop that reads data from a table.

在循环中，我为每一行创建一个新表 $newdata:

In the loop, I create a new table $newdata for each row:

$newdata =  array (
          'wpseo_title' => 'test',
          'wpseo_desc' => 'test',
          'wpseo_metakey' => 'test'
        );

然后，使用 array_push() 我需要将 $newdata 数组附加到以下多维数组:

and then, using array_push() I need to append the $newdata arrays to the following multidimensional array:

$md_array= array (
     'recipe_type' => 
      array (
        18 => 
        array (
          'wpseo_title' => 'Salads',
          'wpseo_desc' => 'Hundreads of recipes for Salads',
          'wpseo_metakey' => ''
        ),
        19 => 
        array (
          'wpseo_title' => 'Main dishes',
          'wpseo_desc' => 'Hundreads of recipes for Main dishes',
          'wpseo_metakey' => ''
        )
      ),
     'cuisine' => 
      array (
        22 => 
        array (
          'wpseo_title' => 'Italian',
          'wpseo_desc' => 'Secrets from Sicily in a click',
          'wpseo_metakey' => ''
        ),
        23 => 
        array (
          'wpseo_title' => 'Chinese',
          'wpseo_desc' => 'Oriental dishes were never this easy to make',
          'wpseo_metakey' => ''
        ),
        24 => 
        array (
          'wpseo_title' => 'Greek',
          'wpseo_desc' => 'Traditional Greek flavors in easy to make recipies',
          'wpseo_metakey' => ''
        )
      ) 
    );

使用array_push 向recipe_type 数组添加新元素(数组)的语法是什么?我永远无法理解多维数组，我有点困惑.

Whats the syntax for adding a new element (array) to the recipe_type array with array_push? I could never get my head around multidimensional arrays and I'm a bit confused.

推荐答案

如果你想在关联数组中以递增顺序添加数据，你可以这样做:

if you want to add the data in the increment order inside your associative array you can do this:

$newdata =  array (
      'wpseo_title' => 'test',
      'wpseo_desc' => 'test',
      'wpseo_metakey' => 'test'
    );

// for recipe

$md_array["recipe_type"][] = $newdata;

//for cuisine

 $md_array["cuisine"][] = $newdata;

这将被添加到食谱或菜肴中，具体取决于最后一个索引是什么.

this will get added to the recipe or cuisine depending on what was the last index.

Array push 通常用在有顺序索引的数组中: $arr[0] , $ar[1] .. 不能直接在关联数组中使用.但是由于您的子数组具有这种索引，您仍然可以像这样使用它

Array push is usually used in the array when you have sequential index: $arr[0] , $ar[1].. you cannot use it in associative array directly. But since your sub array is had this kind of index you can still use it like this

array_push($md_array["cuisine"],$newdata);

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