How to correct my PHP Code to use "file_get_contents" with "json

I am trying to use the file_get_contents function on a JSON link with json_decode as you can see in the code below:

<?php
 $wiki_img_cat_api = "https://zh.wikipedia.org/w/api.php?action=query&format=json&formatversion=2&prop=pageimages|pageterms&piprop=original&titles=亞馬遜公司";
 $data_wikipedia_img_cat_api = json_decode(file_get_contents($wiki_img_cat_api), true);
 $data_wikipedia_img_cat_api = current($data_wikipedia_img_cat_api['query']['pages']);
 $firstWikipediaImage = isset($data_wikipedia_img_cat_api["original"]["source"]) ? $data_wikipedia_img_cat_api["original"]["source"] : "";
 echo $firstWikipediaImage;

But, I get the following error:

Warning: file_get_contents(https://zh.wikipedia.org/w/api.php?action=query&format=json&formatversion=2&prop=pageimages|pageterms&piprop=original&titles=亞馬遜公司): failed to open stream: HTTP request failed! HTTP/1.1 400 Invalid HTTP Request in C:\laragon\www\test3.php on line 205

Please help me to correct this above error.

CodePudding user response：

You need to URL encode the parameter values. The easiest way to do that is with the http_build_query function.

<?php
// Create an associative array of the URL parameters
$params = [
    'action'        => 'query',
    'format'        => 'json',
    'formatversion' => 2,
    'prop'          => 'pageimages|pageterms',
    'piprop'        => 'original',
    'titles'        => '亞馬遜公司'
];

$baseUrl     = 'https://zh.wikipedia.org/w/api.php';

// Build URL parameter string
$paramString = http_build_query($params);

// Append the parameter string to the base URL, make sure to include the ?
$apiRequestUrl = $baseUrl . '?' . $paramString;

// Everything else in your code works as expected
$data_wikipedia_img_cat_api = json_decode(file_get_contents($apiRequestUrl), true);

$data_wikipedia_img_cat_api = current($data_wikipedia_img_cat_api['query']['pages']);
$firstWikipediaImage        = isset($data_wikipedia_img_cat_api["original"]["source"]) ? $data_wikipedia_img_cat_api["original"]["source"] : "";
echo $firstWikipediaImage;

CodePudding user response：

I just tried adding this over all the url in the file_get_contents function like this:

$data_wikipedia_img_cat_api = json_decode(file_get_contents(urlencode($wiki_img_cat_api)), true);

But it returns me the following error:

Warning: file_get_contents(https://zh.wikipedia.org/w/api.php?action=query&format=json&formatversion=2&prop=pageimages%7Cpageterms&piprop=original&titles=亞馬遜公司): failed to open stream: No such file or directory in C:\laragon\www\test3.php on line 229

How to add urlencode only on the title ???