How to Retrieve JSON Data from a URL in PHP?

Retrieving JSON Data from URL in PHP

This article addresses a common issue faced by PHP programmers: retrieving JSON objects from URLs. We will explore methods to accomplish this task and provide comprehensive code examples.

Problem:

You have a URL that returns a JSON object, and you want to retrieve specific data from it, such as the "access_token" value.

Solution:

Method 1: file_get_contents()

$json = file_get_contents('url_here');
$obj = json_decode($json);
echo $obj->access_token;

Note that file_get_contents requires allow_url_fopen to be enabled. You can also use ini_set("allow_url_fopen", 1) to enable it at runtime.

Method 2: curl

$ch = curl_init();
// Warning: This line poses a security risk.
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, 'url_here');
$result = curl_exec($ch);
curl_close($ch);

$obj = json_decode($result);
echo $obj->access_token;

By utilizing these methods, you can easily retrieve JSON objects from URLs and access their contents in PHP.

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