PHP time

[nekng]

How could i display diffrent lines of text based on the time, for example i want to make it so when my server time is 2:00am it will display that we are open untill the server time is 3:00am. Then it will go back to saying that we are closed, then again at 9:00pm untill 10:00pm it will say that we are open.

[Twey]

<?php $hr = date('G'); ?>
<?php if($hr == 2 || $hr == 9) { ?>

<p>We're open.</p>

<?php } else { ?>

<p>We're closed.</p>

<?php } ?>

[InNeedofHelp]

Is there anyway to do something by the hour? Like every hour function update() is called, and it updates every users information.

[blm126]

Cron Jobs are probably better at this then PHP.However yo can do it with PHP like this.

<?php
function update(){
//this will be called once per hour
return true;
}
$current_time = mktime();
$last_updated = file_get_contents("last_updated.txt");
$diff = $current_time - $last_updated;
if($diff >= 3600){
//it has been an hour since update
    update();
    if($fp = @fopen("last_updated.txt","w")) { 
        //Write time to file
          $contents = fwrite($fp,$current_time); 
          fclose($fp);  
    }
    else{
    die("Could not write to file")
    }
}
?>

[InNeedofHelp]

Aha, brilliant. Thank you.

[Twey]

Hmm... but if nobody visits it for an hour, that hour's update will be neglected. I'd keep current. This can also be simplified drastically:

define('DATA_FILE', 'update_tracker.dat');
$c = floor(date('U') / 60 / 60 / 24);
$fc = file(DATA_FILE) or die('Failed to open file for reading.');
$l = $fc[0];

while($l++ < $c)
  update();

$f = fopen(DATA_FILE, 'w') or die('Failed to open file for writing.');
fwrite($f, $c);
fclose($f);

blm126: Single quotes are significantly faster to parse than double, and so should be used wherever double quotes are not needed.

[InNeedofHelp]

Twey, would you mind explaining your code please? It's pretty complicated to me, i dont know how to work with files yet.

[Twey]

I've linked to the relevant documentation. Does that help?

[InNeedofHelp]

Great. Thanks.

[nekng]

<?php $hr = date('G'); ?>
<?php if($hr == 2 || $hr == 9) { ?>

<p>We're open.</p>

<?php } else { ?>

<p>We're closed.</p>

<?php } ?>

it works, thank you!