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<?php
function getContents($url, $header = array(), $opts = array()){
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
if(is_array($header) && count($header) !== 0)
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
curl_setopt($ch, CURLOPT_USERAGENT, ini_get('user_agent'));
curl_setopt($ch, CURLOPT_ENCODING, '');
curl_setopt($ch, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS);
if(is_array($opts)) {
foreach($opts as $key => $value) {
curl_setopt($ch, $key, $value);
}
}
if(defined('PROXY_URL') && !defined('NOPROXY')) {
curl_setopt($ch, CURLOPT_PROXY, PROXY_URL);
}
$content = curl_exec($ch);
$curlError = curl_error($ch);
$curlErrno = curl_errno($ch);
curl_close($ch);
if($content === false)
debugMessage('Cant\'t download ' . $url . ' cUrl error: ' . $curlError . ' (' . $curlErrno . ')');
return $content;
}
function getSimpleHTMLDOM($url,
$header = array(),
$opts = array(),
$lowercase = true,
$forceTagsClosed = true,
$target_charset = DEFAULT_TARGET_CHARSET,
$stripRN = true,
$defaultBRText = DEFAULT_BR_TEXT,
$defaultSpanText = DEFAULT_SPAN_TEXT){
$content = getContents($url, $header, $opts);
return str_get_html($content,
$lowercase,
$forceTagsClosed,
$target_charset,
$stripRN,
$defaultBRText,
$defaultSpanText);
}
/**
* Maintain locally cached versions of pages to avoid multiple downloads.
* @param url url to cache
* @param duration duration of the cache file in seconds (default: 24h/86400s)
* @return content of the file as string
*/
function getSimpleHTMLDOMCached($url,
$duration = 86400,
$header = array(),
$opts = array(),
$lowercase = true,
$forceTagsClosed = true,
$target_charset = DEFAULT_TARGET_CHARSET,
$stripRN = true,
$defaultBRText = DEFAULT_BR_TEXT,
$defaultSpanText = DEFAULT_SPAN_TEXT){
debugMessage('Caching url ' . $url . ', duration ' . $duration);
// Initialize cache
$cache = Cache::create('FileCache');
$cache->setPath(CACHE_DIR . '/pages');
$cache->purgeCache(86400); // 24 hours (forced)
$params = [$url];
$cache->setParameters($params);
// Determine if cached file is within duration
$time = $cache->getTime();
if($time !== false
&& (time() - $duration < $time)
&& (!defined('DEBUG') || DEBUG !== true)) { // Contents within duration
$content = $cache->loadData();
} else { // Content not within duration
$content = getContents($url, $header, $opts);
if($content !== false) {
$cache->saveData($content);
}
}
return str_get_html($content,
$lowercase,
$forceTagsClosed,
$target_charset,
$stripRN,
$defaultBRText,
$defaultSpanText);
}
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