What are some best practices for checking the existence of a website using PHP?

When checking the existence of a website using PHP, it is important to handle different scenarios such as checking for valid URLs, handling errors, and implementing proper error handling. One way to achieve this is by using the `get_headers()` function in PHP, which retrieves information about a file or URL. 

$url = 'https://www.example.com';

$headers = @get_headers($url);

if($headers && strpos($headers[0], '200')) {
    echo 'Website exists and is accessible.';
} else {
    echo 'Website does not exist or is not accessible.';
}

Keywords

cURL HTTP status code file_get_contents error handling website existence

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