Extracting data from Wikipedia API - php

Question

I would like to be able to extract a title and description from Wikipedia using json. So... wikipedia isn't my problem, I'm new to json and would like to know how to use it. Now I know there are hundreds of tutorials, but I've been working for hours and it just doesn't display anything, heres my code:
<?php
$url="http://en.wikipedia.org/w/api.php?action=query&prop=extracts|info&exintro&titles=google&format=json&explaintext&redirects&inprop=url";
$json = file_get_contents($url);
$data = json_decode($json, TRUE);
$pageid = $data->query->pageids;
echo $data->query->pages->$pageid->title;
?>
Just so it easier to click:
http://en.wikipedia.org/w/api.php?action=query&prop=extracts|info&exintro&titles=google&format=json&explaintext&redirects&inprop=url&indexpageids
I know I've probably just done a tiny thing wrong, but its really bugging me, and the code... I'm used to using xml, and I have pretty much just made the switch, so can you explain it a bit for me and for future visitors, because I'm very confused... Anything you need that I haven't said, just comment it, im sure I can get it, and thanks, in advance!

Answer 1

$pageid was returning an array with one element. If you only want to get the fist one, you should do this:
$pageid = $data->query->pageids[0];
You were probably getting this warning:
Array to string conversion
Full code:
$url = 'http://en.wikipedia.org/w/api.php?action=query&prop=extracts|info&exintro&titles=google&format=json&explaintext&redirects&inprop=url&indexpageids';
$json = file_get_contents($url);
$data = json_decode($json);
$pageid = $data->query->pageids[0];
echo $data->query->pages->$pageid->title;

Answer 2

I'd do it like this. It supports there being multiple pages in the same call.
$url = "http://en.wikipedia.org/w/api.php?action=query&prop=extracts|info&exintro&titles=google&format=json&explaintext&redirects&inprop=url";
$json = file_get_contents($url);
$data = json_decode($json, TRUE);
$titles = array();
foreach ($data['query']['pages'] as $page) {
$titles[] = $page['title'];
}
var_dump($titles);
/* var_dump returns
array(1) {
[0]=>
string(6) "Google"
}
*/

Answer 3

Try this it will help you 💯%
This code is to extract title and description with the help of Wikipedia api from Wikipedia
<?php
$url = 'http://en.wikipedia.org/w/api.php?action=query&prop=extracts|info&exintro&titles=google&format=json&explaintext&redirects&inprop=url&indexpageids';
$json = file_get_contents($url);
$data = json_decode($json);
$pageid = $data->query->pageids[0];
$title = $data->query->pages->$pageid->title;
echo "<b>Title:</b> ".$title."<br>";
$string=$data->query->pages->$pageid->extract;
// to short the length of the string
$description = mb_strimwidth($string, 0, 322, '...');
// if you don't want to trim the text use this
/*
echo "<b>Description:</b> ".$string;
*/
echo "<b>Description:</b> ".$description;
?>