By sunslayer on Mar 22, 2011Watches a RSS feed and beeps when a change is discovered, defaults to check every 5 minutes
note: this must be run from the command line, not through your browser
<?php
class timer {
public $callBack, $i, $t;
public function __construct($i,$t,$w = 0) {
$this->i = $i;
$this->t = $t;
if($i*$t > ini_get('max_execution_time') || $t < 1 && $w)
trigger_error("max_execution_time will prevent timer from functioning completely", E_USER_WARNING);
}
public function add($cb,array $params=null) {
if((@function_exists($cb)&&is_string($cb))||is_array($cb)&&count($cb)==2&&@method_exists($cb[0],$cb[1]))
$this->callBack[] = array("f" => $cb, "p" => $params);
}
public function exec() {
do {
foreach($this->callBack as $cb) {
if(is_array($cb['f']))
$cb['f'] = implode("::",$cb['f']);
call_user_func_array($cb['f'],(array)$cb['p']);
}
$this->t--;
sleep($this->i);
} while($this->t != 0);
}
public function __toString() {
return __CLASS__;
}
}
class Rss extends timer {
public $lCache, $cCache, $tCache, $rss;
public function __construct($rss,$i,$t) {
parent::__construct($i,$t);
$this->rss = $rss;
$this->add(array($this,"getRss"),array($this->rss));
echo "\nWatching:\t{$rss}\n\n";
$this->exec();
}
public function getRss($url) {
$this->cCache = $this->rssParser($url);
if($this->lCache[0] != $this->cCache[0] && $this->lCache[0] != NULL) {
$tCache = array();
for($a = 0; $this->cCache[$a]; $a++)
if($this->cCache[$a]==$this->lCache[0])
break;
for(;$a >= 0;$a--)
$tCache[] = $this->cCache[$a];
unset($tCache[0]);
$this->alert($tCache);
}
$this->lCache = $this->cCache;
$this->cCache = array();
}
public function rssParser($url) {
preg_match_all('/(?s)<item>(.+?)<\/item>/',file_get_contents($url),$rss);
$array = array();
foreach($rss[1] as &$rss) {
preg_match_all('/(?s)<(title|description|link|pubDate|author)>(.+)<\/\1>/',$rss,$i);
$item = array("title" => $i[2][0],"author" => $i[2][1],"link" => $i[2][2],"desc" => $i[2][3],"date" => $i[2][4]);
array_push($array,$item);
}
return $array;
}
public function alert(array $cache) {
echo "New posts detected! (".date('h:i:s A').")\n";
foreach($cache as $t)
echo "{$t['title']}\n";
echo "\x07\x07\n";
}
public function __toString() {
return __CLASS__;
}
}
if ($argv[1])
new Rss($argv[1],(is_int($argv[2])?$argv[2]:600),0);
?>
http://php.net/manual/en/book.dom.php
That doesnt work in the command line :S?
Odd, im fairly sure it should?
