Curl extension in PHP installation & initialization with sample code

In PHP, cURL (Client URL) is a library and set of functions that allow you to make HTTP requests to remote servers and retrieve data. cURL provides a way to interact with web services, APIs, and other web resources programmatically.

These are four steps involved in working with cURL.

Initialization and create handler
Setting the options
Execution with curl_exec()
Close the cURL handle

DEMO scripts to post data using cURL
This is not only to collect data but we can also submit form data by POST or GET method to a remote URL or server. Curl function supports many other protocols.

Curl support.

We have to first ensure that curl support is available in our server, for this PHP installation is to be checked. The best way is to check is our phpinfo function. Here is a screenshot of phpinfo.
php info curl extension support

If curl support is not available then process is same as adding any other features to PHP. Here is one example. Same can be followed to add curl extensions in PHP. Once the curl support is available then we will start with a simple code by getting google.com url. The first line will initialize a curl instance and then we will use

<?php
$my_curl = curl_init();//  cURL resource

// WE will add options to our curl 
curl_setopt($my_curl, CURLOPT_URL, "https://www.google.com/");
curl_setopt($my_curl, CURLOPT_HEADER, 0);

curl_exec($my_curl); //execute curl function now and display
curl_close($my_curl); // close the curl connection
?>

Reading external url by curl
PHP Scripts

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Curl functions in PHP

Curl support.

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