这是我现在的代码：
$sql = MysqL_query("SELECT url FROM urls") or die(MysqL_error()); //Query the urls table while($resultSet = MysqL_fetch_array($sql)){ //Put all the urls into one variable // Now for some cURL to run it. $ch = curl_init($resultSet['url']); //load the urls curl_setopt($ch,CURLOPT_TIMEOUT,2); //No need to wait for it to load. Execute it and go. curl_exec($ch); //Execute curl_close($ch); //Close it off } //While loop
我对cURL来说比较新.通过比较新的,我的意思是这是我第一次使用cURL.目前它加载一个2秒钟,然后加载下一个2秒,然后下一个.但是,我想同时加载所有这些.我确信它是可能的,我只是不确定如何.如果有人能指出我正确的方向,我会很感激.
解决方法
您以相同的方式设置每个cURL句柄,然后将它们添加到curl_multi_句柄.要查看的功能是curl_multi_ *功能
documented here.然而,根据我的经验,尝试一次加载太多的URL时出现问题(尽管我目前无法找到我的笔记),所以最后一次我使用curl_mutli_,我一次设置了一批5个URL.
编辑：这是一个缩减版本的代码,我使用curl_multi_：
// -- create all the individual cURL handles and set their options
$curl_handles = array();
foreach ($urls as $url) {
$curl_handles[$url] = curl_init();
curl_setopt($curl_handles[$url],CURLOPT_URL,$url);
// set other curl options here
}
// -- start going through the cURL handles and running them
$curl_multi_handle = curl_multi_init();
$i = 0; // count where we are in the list so we can break up the runs into smaller blocks
$block = array(); // to accumulate the curl_handles for each group we'll run simultaneously
foreach ($curl_handles as $a_curl_handle) {
$i++; // increment the position-counter
// add the handle to the curl_multi_handle and to our tracking "block"
curl_multi_add_handle($curl_multi_handle,$a_curl_handle);
$block[] = $a_curl_handle;
// -- check to see if we've got a "full block" to run or if we're at the end of out list of handles
if (($i % BLOCK_SIZE == 0) or ($i == count($curl_handles))) {
// -- run the block
$running = NULL;
do {
// track the prevIoUs loop's number of handles still running so we can tell if it changes
$running_before = $running;
// run the block or check on the running block and get the number of sites still running in $running
curl_multi_exec($curl_multi_handle,$running);
// if the number of sites still running changed,print out a message with the number of sites that are still running.
if ($running != $running_before) {
echo("Waiting for $running sites to finish...\n");
}
} while ($running > 0);
// -- once the number still running is 0,curl_multi_ is done,so check the results
foreach ($block as $handle) {
// HTTP response code
$code = curl_getinfo($handle,CURLINFO_HTTP_CODE);
// cURL error number
$curl_errno = curl_errno($handle);
// cURL error message
$curl_error = curl_error($handle);
// output if there was an error
if ($curl_error) {
echo(" *** cURL error: ($curl_errno) $curl_error\n");
}
// remove the (used) handle from the curl_multi_handle
curl_multi_remove_handle($curl_multi_handle,$handle);
}
// reset the block to empty,since we've run its curl_handles
$block = array();
}
}
// close the curl_multi_handle once we're done
curl_multi_close($curl_multi_handle);
考虑到你不需要任何东西从URL,你可能不需要很多的东西,但这是我如何将请求块块BLOCK_SIZE,等待每个块运行,然后继续前进,并抓住来自cURL的错误.
