What is the purpose of using get_headers in PHP and how does it work?

The purpose of using get_headers in PHP is to retrieve the headers from a given URL. This function can be used to check if a website is online, get the content type of the response, or get other information contained in the headers. It works by sending an HTTP request to the specified URL and returning an array containing the response headers. 

$url = 'https://www.example.com';
$headers = get_headers($url);

foreach ($headers as $header) {
    echo $header . "<br>";
}

Keywords

get_headers PHP purpose function HTTP headers

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