復(fù)制代碼 代碼如下:

function classic_curl($urls, $delay) {
$queue = curl_multi_init();
$map = array();

foreach ($urls as $url) {
// create cURL resources
$ch = curl_init();

// set URL and other appropriate options
curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_TIMEOUT, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_NOSIGNAL, true);

// add handle
curl_multi_add_handle($queue, $ch);
$map[$url] = $ch;
}

$active = null;

// execute the handles
do {
$mrc = curl_multi_exec($queue, $active);
} while ($mrc == CURLM_CALL_MULTI_PERFORM);

while ($active > 0 && $mrc == CURLM_OK) {
if (curl_multi_select($queue, 0.5) != -1) {
do {
$mrc = curl_multi_exec($queue, $active);
} while ($mrc == CURLM_CALL_MULTI_PERFORM);
}
}

$responses = array();
foreach ($map as $url=>$ch) {
$responses[$url] = callback(curl_multi_getcontent($ch), $delay);
curl_multi_remove_handle($queue, $ch);
curl_close($ch);
}

curl_multi_close($queue);
return $responses;
}

復(fù)制代碼 代碼如下:

function rolling_curl($urls, $delay) {
$queue = curl_multi_init();
$map = array();

foreach ($urls as $url) {
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_TIMEOUT, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_NOSIGNAL, true);

curl_multi_add_handle($queue, $ch);
$map[(string) $ch] = $url;
}

$responses = array();
do {
while (($code = curl_multi_exec($queue, $active)) == CURLM_CALL_MULTI_PERFORM) ;

if ($code != CURLM_OK) { break; }

// a request was just completed -- find out which one
while ($done = curl_multi_info_read($queue)) {

// get the info and content returned on the request
$info = curl_getinfo($done['handle']);
$error = curl_error($done['handle']);
$results = callback(curl_multi_getcontent($done['handle']), $delay);
$responses[$map[(string) $done['handle']]] = compact('info', 'error', 'results');

// remove the curl handle that just completed
curl_multi_remove_handle($queue, $done['handle']);
curl_close($done['handle']);
}

// Block for data in / output; error handling is done by curl_multi_exec
if ($active > 0) {
curl_multi_select($queue, 0.5);
}

} while ($active);

curl_multi_close($queue);
return $responses;
}

復(fù)制代碼 代碼如下:

function callback($data, $delay) {
preg_match_all('/<h3>(.+)<//h3>/iU', $data, $matches);
usleep($delay);
return compact('data', 'matches');
}