In the provided PHP code, what role does the API_KEY and SECRET constants play, and why are they necessary for the url2png function?

The API_KEY and SECRET constants are necessary for the url2png function as they are used to authenticate the request to the URL2PNG API. These constants hold the API key and secret key provided by URL2PNG, allowing the function to make a secure request to the API and retrieve the screenshot of the specified URL. 

<?php
define('API_KEY', 'your_api_key_here');
define('SECRET', 'your_secret_key_here');

function url2png($url, $width, $height) {
    $api_url = 'https://api.url2png.com/v6/' . API_KEY . '/' . SECRET . '/png/?url=' . urlencode($url) . '&viewport=' . $width . 'x' . $height;
    
    // Make API request to get screenshot
    // Code to make API request and retrieve screenshot
}
?>

Keywords

PHP API_KEY SECRET url2png constants

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