如何在php中使用foreach里面的数组？

Question

I am trying to do foreach inside array. I am trying to generate the select box using array value everything seems ok when i give a value manually.

array(
    'name' => __('Testing Selection', 'test'),
    'id' => 'testing',
    'css' => 'min-width:150px;',
    'std' => '2', 
    'default' => '2',
    'type' => 'select',
    'options' => array(
        '1' => __('Test1', 'test'),
        '2' => __('Test2', 'test'),
        '3' => __('Test3', 'test'),
    ),
),

In the above code options key contains three values like 1, 2, 3 and the above code is working. But i want to loop all product id here using foreach but it seems not working for me may be i am trying a wrong way. I know foreach inside array is invalid that's why i am trying this way.

$foos = array(
    'name' => __('Testing Selection', 'test'),
    'id' => 'testing',
    'css' => 'min-width:150px;',
    'std' => '2', 
    'default' => '2',
    'type' => 'select',
    'options' => array(),
),

After array i did foreach

$args = array('post_type' => 'product', 'posts_per_page' => '-1');
$getproducts = get_posts($args);

foreach ($getproducts as $product) {
    $foos['options'][] = array(
        $product->ID => $product->get_title,
    );
}

I want to list 20 more products in the select box everything manually is hard to me can anyone suggest me to use the foreach inside array?

Answer 1

With PHP functions like array_map() or array_reduce() you can create the new array inside an array. array_map () is useful for creating the values ​​for an array, but you can not manipulate the keys with it. Because of that we can use array_reduce() to simulate the behavior of array_map() and to create the associative array needed for options.

$foos = array(
    'name'      => 'Testing Selection',
    'id'        => 'testing',
    'css'       => 'min-width:150px;',
    'std'       => '2', 
    'default'   => '2',
    'type'      => 'select',
    'options'   => array_reduce( get_posts( 'post_type=product&posts_per_page=-1' ), function( $result, $item ) { 
        $result[$item->ID] = $item->post_title;
        return $result;
    })
);

If you don't like the approach, you can create new function that will return the required array for options, and thus improve the readability of code.