Notification of the new linux kernel on your Android in PHP

kernel.php

<?PHP
/*
how to use? very simple!
$ crontab -e
add line
* 7 * * *  php /home/mod/notification.php>/dev/null 2>&1
and save
now script will be run from cron every day at 7:00 am and notify you of a new kernel!

my blog: http://www.sebastian.korotkiewicz.eu/2013/02/02/notification-of-the-new-linux-kernel-on-your-android-in-php/
:)
*/

function notificationAndroid($apikey, $application, $event, $description, $url) {
    $curlchanel = curl_init("https://www.notifymyandroid.com/publicapi/notify");
    curl_setopt($curlchanel, CURLOPT_USERAGENT, 'Mozilla/5.0 (X11; Linux x86_64; rv:11.0) Gecko/20100101 Firefox/16.0.2');
    curl_setopt($curlchanel, CURLOPT_HEADER, 0);
    curl_setopt($curlchanel, CURLOPT_TIMEOUT, 6);
    curl_setopt($curlchanel, CURLOPT_RETURNTRANSFER, 0);
    curl_setopt($curlchanel, CURLOPT_POSTFIELDS, trim("apikey=$apikey&application=$application&event=$event&description=$description&url=$url"));
    curl_exec($curlchanel);
    curl_close($curlchanel);
}


    $curlchanel2 = curl_init("https://www.kernel.org/");
    curl_setopt($curlchanel2, CURLOPT_USERAGENT, 'Mozilla/5.0 (X11; Linux x86_64; rv:11.0) Gecko/20100101 Firefox/16.0.2');
    curl_setopt($curlchanel2, CURLOPT_HEADER, 1);
    curl_setopt($curlchanel2, CURLOPT_TIMEOUT, 6);
    curl_setopt($curlchanel2, CURLOPT_RETURNTRANSFER, 1);
    $strona = trim(curl_exec($curlchanel2));
    curl_close($curlchanel2);
    //preg_match_all('#<a href="http://www.kernel.org/pub/linux/kernel/(.*)/linux-(.*).tar.bz2">(.*)</a>#msU', trim($strona), $ciag1);
    preg_match_all('#<a href="./pub/linux/kernel/(.*)/(.*)">(.*)</a>#msU', trim($strona), $ciag1);
    $linuxKernel = $ciag1[3][1];


$cache = "lastVersion.cache";
if (file_exists($cache)) {
    // read
    $fh = fopen($cache, 'r');
    $data = fread($fh, 10);
    fclose($fh);
    if ($data == $linuxKernel) {
        // old kernel, do nothing, wait for the new kernel
	die();
    } else {
        // new kernel + notification + override cache 
        // write
        $file = fopen($cache, 'w') or die("can't open file");
        fwrite($file, $linuxKernel);
        fclose($file);
        // notification
        notificationAndroid("api-key", "LinuxKernel", "New Linux Kernel!", "Kernel: {$ciag1[2][0]}", "http://kernel.org/");
    }
} else {
    // write
    $file = fopen($cache, 'w') or die("can't open file");
    fwrite($file, $linuxKernel);
    fclose($file);
}
?>