PHP会话支持

Question

I have never worked with sessions before so just need a bit of guidance. Some data from a form needs to be held whilst someone logs in. So I have got this far.

<?php
$_SESSION['tmp']['booking-form'] = array(
    'GT_title' => $SEStitle,
    'GT_actual_duration' => $SESactualduration,
    'SEScalstartdate' => $calstartdate,
    'GT_picture' => $picture,
    'GT_total_duration' => $SEStotalduration,
    'GT_total_dives' => $SEStotaldives,
    'GT_total_price' => $SEStotalprice,
    'GT_total_duration' => $SEStotalduration,
    'GT_specifications' => $SESspecifications
);
?>

Three questions.

1. Where do I put this code as all the named fields in the array exist in a form towards the bottom of the page before the log in process begins.

2. Is that all the code I need or do I need to put something else somewhere else.

3. What do I do to call this session when the client has finished logging in and has been redirected to the booking area where I want this data to be called back up.

Answer 1

Wherever you want to use the session data, call session_start() at the top of any page before any output.

You set the $_SESSION[] wherever you have the data.

You can get the data after login using the same $_SESSION[] array. It will be populated as soon as session_start() has been called.