How to take md5 of a file in php?

Question

Can you please explain how to take md5 of a file using php

score 1 · Accepted Answer · edited May 23 '17 at 11:53

1

Hey mate looks like quick search will find heaps about this check this out

first, store the last time the user made a request

<?php
   $_SESSION['timeout'] = time();
?>

in subsequent request, check how long ago they made their previous request (10 minutes in this example)

 <?php
    if ($_SESSION['timeout'] + 10 * 60 < time()) {
         // session timed out
    } else {
      // session ok
    }
  ?>

edited May 23 '17 at 11:53

Community

1
1

answered Jan 15 '14 at 10:33

Anthony

801
10
20

It works, but I think it wont meet my requirement. My requirement is, if a user puts his php page as ideal for 2 mins then I need to destroy a session variable. – Arjun Pokkattu Jan 18 '14 at 09:53

score 0 · Answer 2 · answered Jan 15 '14 at 10:37

I already answered a similar question. This here is after 15 minutes, i suppose you can rewrite it yourself:

if(time() - $_SESSION['timestamp'] > 900) { //subtract new timestamp from the old one
    alert("15 Minutes over!");
    unset($_SESSION['username'], $_SESSION['password'], $_SESSION['timestamp']);
    $_SESSION['logged_in'] = false;
    header("Location: " . index.php); //redirect to index.php
    exit;
} else {
    $_SESSION['timestamp'] = time(); //set new timestamp
}

How to take md5 of a file in php?

2 Answers2