Question

Am have no clue when it coming to Caching but I was running this file

<?php 
header('Location: http://stats.vbirc.com/remote.php?func=numinchan&param=%23animelon');
?>
<meta http-equiv="refresh" content="600">

My server got banned the firewall keep’s blocking me automatically. I use this about code in a iframe for a custom image (it show’s the user’s in irc)

I want to be able to cache this so it’s only hitting there servers once not everytime someone reloads a page etc…

Ok this some more detail

<a href="animelon.com/ezirc/" class="irctitle">#animelon irc.vbirc.org</a>
<br />Click the link above to join the official animelon chat room or join with you'er 
<a href="irc://irc.vbirc.org:6667/animelon">own client</a>. 
<span class="irc_usersonline"><strong><iframe marginwidth="0" marginheight="0" width="22" height="16" scrolling="no" frameborder=0 src="irc_online.php">
</iframe>
</strong> people online</span>
</p>
</div>

animelon.com/irc_online.php

this is the name of the code I added at the start
this is where I want the cached info to show

img59.imageshack.us/img59/7931/ircz.jpg

(can’t use image’s so have to link to it)

Answer 1

The idea of caching is pretty simple. An abstract example:

if((time() - $time_previously_fetched) > $expire_time){
  $contents = file_get_contents($url); //Retrieve from original source
  saveToDatabase($contents); //Cache it
  $time_previously_fetched = time(); //Save the time to check against for in future
}else{
  $contents = getFromDatabase(); //Retrieve local copy
}

echo $contents;