PHP Caching

<?php
//settings
$cache_ext  = '.html'; //file extension
$cache_time     = 3600;  //Cache file expires afere these seconds (1 hour = 3600 sec)
$cache_folder   = 'cache/'; //folder to store Cache files
$ignore_pages   = array('', '');
$dynamic_url    = 'http://'.$_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] . $_SERVER['QUERY_STRING']; // requested dynamic page (full url)
$cache_file     = $cache_folder.md5($dynamic_url).$cache_ext; // construct a cache file
$ignore = (in_array($dynamic_url,$ignore_pages))?true:false; //check if url is in ignore list
if (!$ignore && file_exists($cache_file) && time() - $cache_time < filemtime($cache_file)) { //check Cache exist and it's not expired.
    ob_start('ob_gzhandler'); //Turn on output buffering, "ob_gzhandler" for the compressed page with gzip.
    readfile($cache_file); //read Cache file
    echo '<!-- cached page - '.date('l jS \of F Y h:i:s A', filemtime($cache_file)).', Page : '.$dynamic_url.' -->';
    ob_end_flush(); //Flush and turn off output buffering
    exit(); //no need to proceed further, exit the flow.
}
//Turn on output buffering with gzip compression.
ob_start('ob_gzhandler'); 
######## Your Website Content Starts Below #########
?>
<!DOCTYPE html>
<html>
    <head>
        <title>Page to Cache</title>
    </head>
        <body>
            Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer ut tellus libero.
        </body>
</html>
<?php
######## Your Website Content Ends here #########
if (!is_dir($cache_folder)) { //create a new folder if we need to
    mkdir($cache_folder);
}
if(!$ignore){
    $fp = fopen($cache_file, 'w');  //open file for writing
    fwrite($fp, ob_get_contents()); //write contents of the output buffer in Cache file
    fclose($fp); //Close file pointer
}
ob_end_flush(); //Flush and turn off output buffering
?>

<?php

//settings

$cache_ext = '.html'; //file extension

$cache_time = 3600; //Cache file expires afere these seconds (1 hour = 3600 sec)

$cache_folder = 'cache/'; //folder to store Cache files

$ignore_pages = array('', '');

$dynamic_url = 'http://'.$_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] . $_SERVER['QUERY_STRING']; // requested dynamic page (full url)

$cache_file = $cache_folder.md5($dynamic_url).$cache_ext; // construct a cache file

$ignore = (in_array($dynamic_url,$ignore_pages))?true:false; //check if url is in ignore list

if (!$ignore && file_exists($cache_file) && time() - $cache_time < filemtime($cache_file)) { //check Cache exist and it's not expired.

ob_start('ob_gzhandler'); //Turn on output buffering, "ob_gzhandler" for the compressed page with gzip.

readfile($cache_file); //read Cache file

echo '';

ob_end_flush(); //Flush and turn off output buffering

exit(); //no need to proceed further, exit the flow.

}

//Turn on output buffering with gzip compression.

ob_start('ob_gzhandler');

######## Your Website Content Starts Below #########

<!DOCTYPE html>

<html>

<head>

<title>Page to Cache</title>

</head>

<body>

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer ut tellus libero.

</body>

</html>

<?php

######## Your Website Content Ends here #########

if (!is_dir($cache_folder)) { //create a new folder if we need to

mkdir($cache_folder);

}

if(!$ignore){

$fp = fopen($cache_file, 'w'); //open file for writing

fwrite($fp, ob_get_contents()); //write contents of the output buffer in Cache file

fclose($fp); //Close file pointer

}

ob_end_flush(); //Flush and turn off output buffering