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qwerty
Asked: 2020-08-14 10:05:09 +0800 CST 2020-08-14 10:05:09 +0800 CST

Access JSON object without knowing the name in PHP

  • 772

I'm trying to access the thumbnail source, but the pageid changes dynamically and I can't find a way to access it. I am working with PHP and in this way I access the resources of the Wikipedia API

$wikipediaArticleImage = $wikipediaArticle['query']["pages"][36408]["thumbnail"]["source"]

Where the pageid [36408]changes dynamically depending on the article searched

enter image description here

Thank you

php

3 Answers

  1. Best Answer

    You can simply iterate over all elements

    foreach($wikipediaArticle['query']["pages"] as $pageId => $data) {
   $wikipediaArticleImage = $data['thumbnail']['source'];
}

    Keep in mind that if you have more than one page, this code will bring the image of the last page, if you want the first one, put a break

    foreach($wikipediaArticle['query']["pages"] as $pageId => $data) {
   $wikipediaArticleImage = $data['thumbnail']['source'];
   break;
}

    If you want to save all put them in an arrangement

    $wikipediaArticleImages = [];
foreach($wikipediaArticle['query']["pages"] as $pageId => $data) {
       $wikipediaArticleImages[] = $data['thumbnail']['source'];
}
    • 2

  2. You can get the id like this. It's the value left in $key when you loop.

    $pages = $wikipediaArticle['query']["pages"];
foreach ($pages as $key=>$value){
    echo 'En la pagina ' . strval($key) . ' esta el source: ' . $pages[$key]["thumbnail"]["source"]; 
}
    • 1

  3. If your code is in java, you can use something similar to this

    You put it in a jsonElement, extract the json object, and then serialize it to Json, and at the end iterate through each object to get the listing.

    private JsonElement jsonTickets;

         Response<JsonElement> response = call.execute();

            if (response.isSuccessful()) {
                jsonTickets = response.body();

                if (jsonTickets.getAsJsonObject().size() > 0) {
                    JSONObject jsonObject = new JSONObject(jsonTickets.toString());
                    Iterator<String> keys = jsonObject.keys();

                    mTickets = new ArrayList<>();

                    while (keys.hasNext()) {
                        String key = keys.next();
                        Ticket itemTicket = gson.fromJson(jsonObject.get(key).toString(), Ticket.class);
                        mTickets.add(itemTicket);
                    }
                }
            }

    If it is in C#, with a simpleJArray

    • 0