CODEWITHSUNDEEP
phpheader
Josh12
Josh12

Reputation: 13

php header expire every day at X

How can I set the document to expire every day at 2AM in PHP?

Upvotes: 1

Views: 2543

Answers (5)

Tommy Lacroix
Tommy Lacroix

Reputation: 1553

// 2AM today
$epoch = mktime(2,0,0,date('n'),date('j'),date('y')); 

// Go to tomorrow if current time > 2AM
$epoch += date('H') >= 2 ? 86400 : 0; 

// Send header with RFC 2822 formatted date
header('Expires: '.date('r', $epoch));

Upvotes: 1

Gumbo
Gumbo

Reputation: 655309

You can use strtotime to get the Unix timestamp at 2 AM and subtract that from the current time:

$diff = strtotime('2 AM') - time();
if ($diff < 0) $diff += 86400;

You can then use that difference for Cache-Control’s max-age:

header('Cache-Control: max-age='.$diff);

Upvotes: 0

KingCrunch
KingCrunch

Reputation: 131921

Set the Expires-HTTP-Header (for an example, see Wikipedia) with header(). You just need to specify the date.

header("Expires: " . date('D, d M Y') . " 02:00:00 GMT");

date()

Note, that this is GMT. You maybe want to set another timezone.

Upvotes: 0

superfro
superfro

Reputation: 3302

header("Expires: " . date("D, j M Y", strtotime("now")) . " 02:00:00 GMT");

or 

header("Expires: " . date("D, j M Y", strtotime("tomorrow")) . " 02:00:00 GMT");

Upvotes: 4

Chris
Chris

Reputation: 12078

php::header() resource

You will want to use:

//assuming getTimeUnitl2AM() returns time in seconds until 2am 
//if you need help implementing a function that returns 
//time until 2am ask 
$time = getTimeUntil2AM(); 
header("Expires: $time"); // set expiration time

Upvotes: 1

Related Questions