private function isUrl($link)
{
if (strpos($link, ' ') !== false) {
return false;
}
$link = rtrim($link, '\\');
$link = ltrim($link, ':;/\\!@#$%^&*-_=+|\'"?<>[](){}.,');
$link = stripos($link, 'http') !== 0 ? 'http://' . $link : $link;
foreach ($this->except as $page => $opt) {
if (stristr($link, $page) !== false && $opt == 'pass') {
return $link;
}
if (stristr($link, $page) !== false && $opt == 'block') {
return false;
}
}
$parse = parse_url($link);
if (empty($parse['host'])) {
return false;
}
if (filter_var($parse['host'], FILTER_VALIDATE_IP)) {
return $link;
} else {
$dot = strrpos($parse['host'], '.') - strlen($parse['host']);
$domain = strtoupper(substr($parse['host'], $dot + 1));
return array_intersect([$domain], UrlHelper::domainList()) ? $link : false;
}
}
protected function loadStreamUrl($url, $opts = false)
{
$ctx = $opts !== false ? stream_context_create($opts) : $this->ctx;
$stream = @fopen($url, 'r', false, $ctx);
if (empty($stream)) {
return false;
}
if (empty($http_response_header)) {
return false;
}
$this->httpHeader = UrlHelper::httpParseHeaders($http_response_header);
$html = stream_get_contents($stream, 1024 * 1024 * 3);
//max 3mb
fclose($stream);
return $html;
}