apache_request_headers

Fetch all HTTP request headers

&reftitle.description; `array` `apache_request_headers`

Fetches all HTTP request headers from the current request. Works in the Apache, FastCGI, CLI, and FPM webservers.

&reftitle.parameters; &no.function.parameters;
&reftitle.returnvalues;

An associative array of all the HTTP headers in the current request.

&reftitle.changelog;

&Version; | &Description;
7.3.0 | This function became available in the FPM SAPI.

&reftitle.examples;

### `apache_request_headers` example

    <?php
    $headers = apache_request_headers();

    foreach ($headers as $header => $value) {
        echo "$header: $value <br />\n";
    }
    ?>

&example.outputs.similar;

    Accept: */*
    Accept-Language: en-us
    Accept-Encoding: gzip, deflate
    User-Agent: Mozilla/4.0
    Host: www.example.com
    Connection: Keep-Alive

&reftitle.notes;

You can also get at the value of the common CGI variables by reading them from the environment, which works whether or not you are using PHP as an Apache module. Use `phpinfo` to see a list of all of the available environment variables.

&reftitle.seealso;

- `apache_response_headers`