[RESOLVED] Script with caching

PaPPy

i have created the script below to pull the contents of the server status for the game RF online

the site allows anyone to get their contents
(http://www.rfstats.com/server_status/feed.html)

the only thing they want is to have ur script only parse their site every 60 seconds using some sort of caching

i have looked around and cannot find a simple way to do this. who can help me?

<?

$data = file_get_contents ( 'http://www.rfstats.com/server_status/feed.txt' ); // string to look in

$new = 'Login1';
$end = 'S|';

if ( ( $pos = strpos ( $data, $new ) ) !== false )
{
    $text = substr ( $data, ( $len = ( $pos + strlen ( $new ) ) ), ( strpos ( $data, $end, $len ) - $len ) );

$l = str_replace('L|', '<br>', $text);    
$p = str_replace('P|', '<br>', $l);
$g1 = str_replace('G|[1] ', '<br>', $p);
$g2 = str_replace('G|[2] ', '<br>', $g1);
$g3 = str_replace('G|[3] ', '<br>', $g2);
$off = str_replace('|0|', ' <img src="down.jpg"> ', $g3);
$on = str_replace('|1|', ' <img src="up.jpg"> ', $off);
echo "Login1" .$on;


}
else
{
    echo 'substr was not found';
}

?>

thx in advanced

dotnotwhat

Can you store the output as a file or in a database? Then each time script is called, just check when last the file / database was updated - if less than an hour ago, give the cached output, if more than an hour, process the server info, store updated output and give it to the user.

PaPPy

yes of course but id need help doing that

dotnotwhat

What is it you want to cache exactly? Is it the 'http://www.rfstats.com/server_status/feed.txt' file itself or is it the output of your PHP script that appears to make an HTML version of the feed.txt file?

If you just cache your script, people can still hit the 'http://www.rfstats.com/server_status/feed.txt' URL as often as they like, so I presume it is the actual feed.txt file you want to cache? How is this text file generated and is it on your server / same server as your PHP script?

Plasma

This should be appropriate - not tested though.

<?

// Cache time in seconds
define('CACHE_TIME', 5 * 60);

// Where we store a local copy of the feed for caching purposes
define('CACHE_FILE', 'feed.cache');

// Where the live feed is located
define('FEED_URL', 'http://www.rfstats.com/server_status/feed.txt');

// Is our cache file new enough to use?
if (time() - filemtime(CACHE_FILE) < CACHE_TIME)
{
	// Use cache
	$data = file_get_contents(CACHE_FILE);
} else {
	// Cache expired, download new copy, and grab its contents ($data)
	$result = file_put_contents(CACHE_FILE, $data = file_get_contents(FEED_URL));
}

$new = 'Login1';
$end = 'S|';

if ( ( $pos = strpos ( $data, $new ) ) !== false )
{
    $text = substr ( $data, ( $len = ( $pos + strlen ( $new ) ) ), ( strpos ( $data, $end, $len ) - $len ) );

$l = str_replace('L|', '<br>', $text);    
$p = str_replace('P|', '<br>', $l);
$g1 = str_replace('G|[1] ', '<br>', $p);
$g2 = str_replace('G|[2] ', '<br>', $g1);
$g3 = str_replace('G|[3] ', '<br>', $g2);
$off = str_replace('|0|', ' <img src="down.jpg"> ', $g3);
$on = str_replace('|1|', ' <img src="up.jpg"> ', $off);
echo "Login1" .$on;


}
else
{
    echo 'substr was not found';
}

?>

PaPPy

the scipt on rfstats.com is by someone elses
what his script does is communicate with the game servers and outputs to feed.txt
he does not want to share the code of the script that creates the output of feed.txt
but he doesnt mind u referencing/scraping/parsing the feed.txt file

what the owner would like is for my script on my websever to only hit his feed.txt file once in a 60 sec time frame

so i hope that clearifies or answers ur questions

thanks again

dotnotwhat

In that case, Plasma's code should work for you.

PaPPy

wow i didnt even relize that his code was there thx and let me try it out

PaPPy

when i run the script it is echoing the else statment at the bottom of the page and not creating the file...
i have set permissions on the cache file and the script
any suggestions anyone can see as i trouble shoot?

dotnotwhat

Does your cache file get updated?

PaPPy

negative
i tried a simple echo to see what $data is being reflected and an error appears
Fatal error: Call to undefined function: file_put_contents() in newrfo.php on line 19

so im guessing my webserver (hosted by 1and1.com) isnt running a compatable php version that knows the file_put_contents?

so i guess ill just use the file command and load it into a string?

dotnotwhat

Ahhh, file_put_contents() is included in PHP5 and not PHP4. If you use PHP4 you need to use fopen(), fwrite(), and fclose() instead. Have a look at the PHP manual pages for these functions and there will likely be an example you can use.

PaPPy

lol i can see the hand slap to the forhead on that one... k im checking now

PaPPy

cool this is what i got and it appears to work as i waited for 5 mins for it to check for new material

<?

// Cache time in seconds
define('CACHE_TIME', 5 * 60);

// Where we store a local copy of the feed for caching purposes
define('CACHE_FILE', 'feed.cache');

// Where the live feed is located
define('FEED_URL', 'http://www.rfstats.com/server_status/feed.txt');

// Is our cache file new enough to use?
if (time() - filemtime(CACHE_FILE) < CACHE_TIME)
{
    // Use cache

$data = file_get_contents(CACHE_FILE);

} else {
    // Cache expired, download new copy, and grab its contents ($data)

$data = file_get_contents(FEED_URL);
$fp= fopen(CACHE_FILE, 'w');
fwrite ($fp, $data); 
fclose($fp);

}

$new = 'Login1';
$end = 'S|';

if ( ( $pos = strpos ( $data, $new ) ) !== false )
{
    $text = substr ( $data, ( $len = ( $pos + strlen ( $new ) ) ), ( strpos ( $data, $end, $len ) - $len ) );

$l = str_replace('L|', '<br>', $text);    
$p = str_replace('P|', '<br>', $l);
$g1 = str_replace('G|[1] ', '<br>', $p);
$g2 = str_replace('G|[2] ', '<br>', $g1);
$g3 = str_replace('G|[3] ', '<br>', $g2);
$off = str_replace('|0|', ' <img src="down.jpg"> ', $g3);
$on = str_replace('|1|', ' <img src="up.jpg"> ', $off);
echo "Login1" .$on;


}
else
{
    echo 'Error Site may have a problem pulling the server status';

}

?>

anyone have any suggestions on anything or how to improve my sloppy code

PaPPy

ok this is good as is ty Plasma and dotnotwhat

very much appricated
out come is: http://pappyspage.com/rfoserverstatus.php
or others with the text instead of it as alt tags on the pictures

ty setting to resolved status