php - 在数组中运行循环以获取动态值

Question

We have created function to rotate banners by it's priority value.

We had run this to three banners only, But now we need multiple banners.

We used this array

$arr1 = array(
        array("url" => "1", "priority" => $AD_weight_1),
        array("url" => "2", "priority" => $AD_weight_2),
        array("url" => "3", "priority" => $AD_weight_3),
        );

But now we can't add number or ad weight manually, So we tried to use something like this but it's not working and show only last number of loop !!

$ads_limit = 7;
for ($xy = 0; $xy < $ads_limit; $xy++)
{   
    $arr1 = array(
    array("url" => $xy, "priority" => $ad_groups[$xy]['ad_before_post_weight']),
    );  
}
print_r ($arr1);

Can we use loop inside array or you have any idea for this ?

Answer 1

The issue is that you are assigning the entire array on each iteration of the loop, you need to add elements.

$ads_limit = 7;

// Initialize $arr1 as an array
$arr1 = [];
for ($xy = 0; $xy < $ads_limit; $xy++)
{   
    // Add ads as arrays
    $arr1[] = 
        array("url" => $xy, "priority" => $ad_groups[$xy]['ad_before_post_weight']);  
}
print_r ($arr1);