Question

When I check apache_request_headers() I found PHPSESSID.

$headers = apache_request_headers();

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

results something like this.

Host: localhost.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:10.0.2) Gecko/20100101 Firefox/10.0.2
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Cookie: PHPSESSID=ltj5b4tvu9lcpvt9itt3ge4oj6 

Question :

How do I turn off the PHPSESSID and why it’s appear on every page by default?

Answer 1

If you want to turn off using cookies in sessions, you can set the PHP ini directive session.use_cookies to 0. See the manual.