Question

我有一个工作数组如下

 "content" => array
    (
        array //sub array for image 1
        (
            'url' => $uploadspath.$media_url0,//main image
            "type" =>$type0,//media type
            "caption"=>$caption0
        ),

        array //sub array for image 2
        (
            'url' => $uploadspath.$media_url1,//main image
            "type" =>$type1,//media type
            "caption"=>$caption1
        ),

        array //sub array for image 3
        (
            'url' => $uploadspath.$media_url2,//main image
            "type" =>$type2,//media type
            "caption"=>$caption2
        ),

        ....Programatically add new sub arrays here subject to the existence of $media_url(4,5,6 etc)..

    );

我从数据库中获取$media_url和其他数据。如果有$media_url4; $media_url5; $media_url6; $media_url7;等值，我想通过添加额外的子数组和相关的URL /类型/标题元素来编程扩展数组。。（最多10张图片）

我的问题是如何使用额外的子数组来编码我的数组的扩展，纯粹基于其他media_urls的存在。简单地说，我希望能够按照以下几行做一些事情，但我不知道如何在嵌套数组结构中实现它...

    if ($media_url4) {code to add sub array/element for image 4}
    if ($media_url5) {code to add sub array/elementsfor image 5}
    etc...

感谢您的帮助。

Answer 1

//Below we have a function or pdo function that return the new values from database that you want to put in the CONTENT MASTER ARRAY, NOW we put the values in a variable $rows

$rows = functionThatReturnNewValuesToPutInContentArray();

//The foreach looping the variable rows, getting each row in database and putting this in a variable $row

foreach($rows as $row){

  //If the $row object data from database contains media_url value add new subarray to masterContentArray
    if($row->media_url != ''){
        $newSubArray = [
            //$row->media_url, is considering that you have a column in your db named by media_url, and that contains url string
            'url'=>$row->uploadsPath . $row->media_url,
            'type'=>$row->type,
            'caption'=>$row->caption,
        ];
        array_push($masterContentArray['content'], $newSubArray);
    }

}
return json_encode($content);

以子数组的形式编程扩展数组

1 个答案: