API:Categoryinfo

prop=categoryinfo (ci)

Returns information about the given categories.

{
"batchcomplete":"",
"query":{
"pages":{
"-1":{
"ns":14,
"title":"Category:Foo",
"missing":"",
"categoryinfo":{
"size":1,
"pages":1,
"files":0,
"subcats":0
}
},
"1504":{
"pageid":1504,
"ns":0,
"title":"Albert"
},
"3108204":{
"pageid":3108204,
"ns":14,
"title":"Category:Infobox templates",
"categoryinfo":{
"size":2066,
"pages":2048,
"files":0,
"subcats":18
}
}
}
}
}

Python

#!/usr/bin/python3
"""
 get_category_info.py
 MediaWiki API Demos
 Demo of `Categoryinfo` module: Get information about few categories
 MIT license
"""
importrequests
S = requests.Session()
URL = "https://en.wikipedia.org/w/api.php"
PARAMS = {
 "action": "query",
 "format": "json",
 "titles": "Category:Foo|Category:Infobox templates",
 "prop": "categoryinfo"
}
R = S.get(url=URL, params=PARAMS)
DATA = R.json()
PAGES = DATA["query"]["pages"]
for k, v in PAGES.items():
 print(v["title"] + " has " + str(v["categoryinfo"]["pages"]) + " pages.")

PHP

<?php
//This file is autogenerated. See modules.json and autogenerator.py for details
/*
 get_category_info.php
 MediaWiki API Demos
 Demo of `Categoryinfo` module: Get information about a few categories
 MIT License
*/
$endPoint = "https://en.wikipedia.org/w/api.php";
$params = [
 "action" => "query",
 "format" => "json",
 "titles" => "Category:Foo|Category:Infobox templates",
 "prop" => "categoryinfo"
];
$url = $endPoint . "?" . http_build_query( $params );
$ch = curl_init( $url );
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
$output = curl_exec( $ch );
curl_close( $ch );
$result = json_decode( $output, true );
foreach( $result["query"]["pages"] as $k => $v ) {
 echo( $v["title"] . " has " . $v["categoryinfo"]["pages"] . " pages." . "\n" );
}

JavaScript

//This file is autogenerated. See modules.json and autogenerator.py for details
/*
 get_category_items.js
 MediaWiki API Demos
 Demo of `Categorymembers` module : List twenty items in a category
 MIT License
*/
varurl="https://en.wikipedia.org/w/api.php";
varparams={
action:"query",
prop:"categoryinfo",
titles:"Category:Foo|Category:Infobox templates",
format:"json"
};
url=url+"?origin=*";
Object.keys(params).forEach(function(key){url+="&"+key+"="+params[key];});
fetch(url)
.then(function(response){returnresponse.json();})
.then(function(response){
varpages=response.query.pages;
for(varpageinpages){
console.log(pages[page].title+" has "+pages[page].categoryinfo.pages+" pages.");
}
})
.catch(function(error){console.log(error);});

MediaWiki JS

// This file is autogenerated. See modules.json and autogenerator.py for details
/*
	get_category_info.js
	MediaWiki API Demos
	Demo of `Categoryinfo` module: Get information about a few categories
	MIT License
*/
varparams={
action:'query',
format:'json',
titles:'Category:Foo|Category:Infobox templates',
prop:'categoryinfo'
},
api=newmw.Api();
api.get(params).done(function(data){
varpages=data.query.pages,
page;
for(pageinpages){
console.log(pages[page].title+' has '+pages[page].categoryinfo.pages+' pages.');
}
});