What server variable in PHP can be used to determine the content length of a page?

To determine the content length of a page in PHP, you can use the `$_SERVER['CONTENT_LENGTH']` server variable. This variable contains the length of the request body sent to the server in the case of POST requests. You can use this variable to get the content length of the page and perform any necessary operations based on that information. 

$content_length = $_SERVER['CONTENT_LENGTH'];
echo "Content Length: " . $content_length;

Keywords

$_SERVER content length PHP server variable page length

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