What Is cURL in PHP: Uses, Basic Concepts and Authentication | Simplilearn
Briefly

The 'Client for URLs,' cURL, a PHP library and command-line tool, allows sending and receiving files over HTTP and FTP, supporting features like proxies, SSL, cookies, and authentication.
cURL in PHP enables using URL syntax to handle data exchange between websites/domains, copy website content, automate form submissions, and manage authentication and cookies through functions like curl_init and curl_exec.
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