我有一个网络应用程序，它可以获取各种来源的内容，以测试该文本中是否存在某个关键字。
问题是当该程序运行时，整个网站变得无响应。
我试过添加 sleep(1); 到处都是休息时间，但唯一能做的就是延长执行时间，从而使我的网站在更长的时间内保持无响应。
是否有另一种解决方案可以防止一个程序停止整个网站或影响整个网站？
这是代码示例（请不要介意使用mysql而不是mysqli...该网站按原样交给我，目前将网站改造成mysqli的工作量太大）
function updatethestuff()
{
$count = 0;
error_reporting(E_ALL);
ini_set('display_errors', '1');
$this->write_file(FCPATH . '/pagemodules/rssfeedlog.txt','Begin met het verwerken van alle rssfeeds'."\n",'w');
$feeds = $this->db->query("SELECT * FROM rsscanner.feeds where `url` not like 'disabled' order by `id` asc");
foreach($feeds->result() as $feed)
{
if(!isset($this->rssparser))
{
$this->load->library('RSSParser', array('url' => $feed->url, 'life' => 2));
}
else
{
$this->rssparser->reinit(array('url' => $feed->url, 'life' => 2));
}
$this->write_file(FCPATH.'/pagemodules/rssfeedlog.txt','Begin met parsen van resultaten van ' . $feed->naam . "\n");
$data = $this->rssparser->getFeed(20);
foreach ($data as $item)
{
$innerHTML='';
$link = mysql_real_escape_string($item['link']);
$query = $this->db->query("SELECT feed_id from rsscanner.rsscontent where url='$link' limit 0,1");
$this->write_file(FCPATH . '/pagemodules/rssfeedlog.txt',$feed->naam . ': Aantal keren dat ' . $link . ' al voorkomt is ' . $query->num_rows() . "\n");
sleep(1);
if($query->num_rows() == 0)
{
$dom = new DOMDocument();
$dom->validateOnParse = false;
$html = get_data($item['link']);
$dom->loadHTML($html);
$this->write_file(FCPATH . '/pagemodules/rssfeedlog.txt',$feed->naam . ': HTML data geladen' . "\n");
sleep(1);
if(isset($feed->contentdiv))
{
$x = $dom->getElementById($feed->contentdiv);
$tmp_dom = new DOMDocument();
$tmp_dom->appendChild($tmp_dom->importNode($x, true));
$innerHTML.=trim($tmp_dom->saveHTML());
$this->write_file(FCPATH . '/pagemodules/rssfeedlog.txt',$feed->naam . ': Informatie uit de contentdiv("' . $feed->contentdiv . '") geladen'. "\n");
sleep(1);
}
else
{
$finder = new DomXPath($dom);
$nodes = $finder->query("//*[contains(concat(' ', normalize-space(@class), ' '), ' {$feed->containerclass} ')]");
$tmp_dom = new DOMDocument();
foreach ($nodes as $node)
{
$tmp_dom->appendChild($tmp_dom->importNode($node,true));
}
$innerHTML.=trim($tmp_dom->saveHTML());
$this->write_file(FCPATH . '/pagemodules/rssfeedlog.txt',$feed->naam . ': Informatie uit de content class("' . $feed->containerclass . '") geladen' . "\n");
sleep(1);
}
unset($dom);
unset($tmp_dom);
$innerHTML = mysql_real_escape_string(stripslashes($innerHTML));
$this->write_file(FCPATH . '/pagemodules/rssfeedlog.txt',$feed->naam . ': html veilig gemaakt voor database'. "\n");
sleep(1);
$q=$this->db->query("SELECT * FROM `rsscanner`.`zoekwoorden` union select * from `rsscanner`.`zoekwoord_synoniem`");
$found = false;
$keywordsstring = "";
$lowerhtml = strtolower($innerHTML);
$this->write_file(FCPATH . '/pagemodules/rssfeedlog.txt',$feed->naam . ': Begin met zoekwoord vergelijking'. "\n");
sleep(1);
foreach($q->result() as $r)
{
if(strpos($lowerhtml,strtolower($r->zoekwoord)) !== false)
{
$found = true;
$keywordsstring = "$keywordsstring ".$r->zoekwoord;
$this->write_file(FCPATH . '/pagemodules/rssfeedlog.txt',$feed->naam . ': - Match met zoekwoord: ' . $r->zoekwoord . "\n");
sleep(1);
}
}
if($found)
{
$keywordsstring = mysql_real_escape_string($keywordsstring);
$title = mysql_real_escape_string($item['title']);
$desc = mysql_real_escape_string(strip_tags($item['description']));
$date = mysql_real_escape_string(date('Y-m-d',strtotime($item['pubDate'])));
$this->db->query("INSERT INTO rsscanner.rsscontent (feed_id,title,description,published,url,content,keywords_found)
VALUES ('{$feed->id}','$title','$desc','$date','$link','$innerHTML','$keywordsstring')");
$this->write_file(FCPATH . '/pagemodules/rssfeedlog.txt',$feed->naam . ': Opslaan in database als geldig zoekresultaat' . "\n");
}
else
{
$keywordsstring = mysql_real_escape_string($keywordsstring);
$title = mysql_real_escape_string($item['title']);
$desc = mysql_real_escape_string(strip_tags($item['description']));
$date = mysql_real_escape_string(date('Y-m-d',strtotime($item['pubDate'])));
$this->db->query("INSERT INTO rsscanner.rsscontent (feed_id,title,description,published,url,content,keywords_found)
VALUES ('{$feed->id}','$title','$desc','1983-05-10 09:10:53','$link','$innerHTML','NO MATCH')");
$this->write_file(FCPATH . '/pagemodules/rssfeedlog.txt',$feed->naam . ': markeren in database als een no match' . "\n");
}
sleep(1);
}
}
}
echo "done";
}