(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)
apache_response_headers — Fetch all HTTP response headers
apache_response_headers(): array
Fetch all HTTP response headers. Works in the Apache, FastCGI, CLI, and FPM webservers.
This function has no parameters.
An array of all Apache response headers on success.
Example #1 apache_response_headers() example
<?php print_r(apache_response_headers()); ?>
The above example will output something similar to:
Array
(
[Accept-Ranges] => bytes
[X-Powered-By] => PHP/4.3.8
)
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https://www.php.net/manual/en/function.apache-response-headers.php