/**
* Mendownload $size buah link sekaligus, lalu diproses oleh fungsi $function
* @param integer $size jumlah thread yg diinginkan
* @param array $pages_url array of full url
* @param string $function nama fungsi yang dipanggil untuk memproses 1 halaman,
* fungsinya minimal punya 1 parameter (Page $P)
* @param array $params parameter tambahan ke fungsi
*/
public static function multiProcess($size, $pages_url, $function, $params = false)
{
$n = 0;
$curlHandle = null;
$curlList = array();
foreach ($pages_url as $aurl) {
if ($n == 0) {
$curlHandle = curl_multi_init();
}
$curlList[$aurl] = self::addHandle($curlHandle, $aurl);
$n++;
if ($n >= $size) {
self::execHandle($curlHandle);
foreach ($curlList as $theurl => $curlEl) {
$html = curl_multi_getcontent($curlEl);
// Ada kemungkinan gagal retrieve
if (trim($html)) {
$P = new Page();
$P->fetch_text($html);
} else {
$P = new Page($theurl);
}
if ($params) {
call_user_func_array($function, array_merge(array($P), $params));
} else {
$function($P);
}
curl_multi_remove_handle($curlHandle, $curlEl);
}
curl_multi_close($curlHandle);
$n = 0;
$curlList = array();
}
}
if ($curlList) {
self::execHandle($curlHandle);
foreach ($curlList as $theurl => $curlEl) {
$html = curl_multi_getcontent($curlEl);
// Ada kemungkinan gagal retrieve
if (trim($html)) {
$P = new Page();
$P->fetch_text($html);
} else {
$P = new Page($theurl);
}
if ($params) {
call_user_func_array($function, array_merge(array($P), $params));
} else {
$function($P);
}
curl_multi_remove_handle($curlHandle, $curlEl);
}
curl_multi_close($curlHandle);
}
}
function coursera()
{
$p = new Page();
$p->fetch_text(file_get_contents('D:\\temp\\Design and Analysis of Algorithms I\\coursera.dump.htm'));
$p->go_line('class="item_list"');
do {
if ($p->curr_line()->contain('<li')) {
$title = $p->next_line()->to_s();
} else {
if ($p->curr_line()->contain('download.mp4')) {
$href = $p->curr_line()->dup()->cut_between('href="', '"')->to_s();
echo "<a href='{$href}'>{$title}</a><br />\n";
}
}
} while (!$p->next_line()->contain('<script>'));
}
