如何从外部 JavaScript 检索 PHP 中的内容

Question

I have an external JavaScript file, I would like to display array content in my PHP page. How can I display the content by loop. I tried to display the content using following code. But Failed.

 <?php
 ini_set('allow_url_fopen', 'On');

$feed = file_get_contents("https://example.com/media-list.js");
$array = json_decode($json);
var_dump($array);
$urlPoster=array();
foreach ($array as $value) { 
    $urlPoster[]=$value->urlPoster;
}
print_r($urlPoster);
 ?>

media-list.js content

var contents = {
    "0W7EHsR8":{
        "attachmentCode":"0W7EHsR8",
        "title":"title1",

    },  

    "vciym7Zb4":{
        "attachmentCode":"vciym7Zb4",
        "title":"title2",

    },  

    "XlKBM6":{
        "attachmentCode":"XlKBM6",
        "title":"Title3",

    }
};

I would like to display content like

Title is "title1".

Title is "title2".

Answer 1

You are trying to use json_decode() on a Javascript Array. JSON and Javascript are two different things.
You need to convert your contents array to JSON, save it in a different file ( contents.json for example) and load that file with file_get_contents .
If you need to do this only once you can do something like

var contents = {
    "0W7EHsR8":{
        "attachmentCode":"0W7EHsR8",
        "title":"title1",

    },  

    "vciym7Zb4":{
        "attachmentCode":"vciym7Zb4",
        "title":"title2",

    },  

    "XlKBM6":{
        "attachmentCode":"XlKBM6",
        "title":"Title3",

    }
};

console.log(JSON.stringify(contents));

and copy the result from the console (click CTRL+Shift+I to open it).

JSON.stringify() takes a Javascript array and turns it into a JSON string.

for this small array the JSON equivalent is

{"0W7EHsR8":{"attachmentCode":"0W7EHsR8","title":"title1"},"vciym7Zb4":{"attachmentCode":"vciym7Zb4","title":"title2"},"XlKBM6":{"attachmentCode":"XlKBM6","title":"Title3"}}

If you intend on making this dynamic (say, loading all attachemnts from a database) you can create a php file that loads that data into an array and returns it into proper JSON using json_encode(). Loading that file with file_get_contents and using json_decode like you are doing now should do the trick.