public function request()
{
//create the multiple cURL handle
$mh = curl_multi_init();
$running = null;
# Setup all curl handles
# Loop through each created curlNode object.
foreach ($this->_threads as $id => $thread) {
$url = $thread['url'];
$current = new App_Curl();
$current->setAutodetectEncoding(true);
$current->setUrl($url);
# Set defined options, set through curlNode->setOpt();
if (isset($thread['curl_opts'])) {
foreach ($thread['curl_opts'] as $key => $value) {
$current->setOpt($key, $value);
}
}
curl_multi_add_handle($mh, $current->getHandler());
$this->_threads[$id]['curl'] = $current;
$this->_threads[$id]['handler'] = $current->getHandler();
$this->_threads[$id]['start'] = microtime(1);
}
unset($thread);
# Main loop execution
do {
# Exec until there's no more data in this iteration.
# This function has a bug, it
while (($execrun = curl_multi_exec($mh, $running)) == CURLM_CALL_MULTI_PERFORM) {
}
if ($execrun != CURLM_OK) {
break;
}
# This should never happen. Optional line.
# Get information about the handle that just finished the work.
while ($done = curl_multi_info_read($mh)) {
# Call the associated listener
foreach ($this->_threads as $id => $thread) {
# Strict compare handles.
if ($thread['handler'] === $done['handle']) {
# Get content
$curl = $thread['curl'];
$curl->parseResult(curl_multi_getcontent($done['handle']));
# Call the callback.
call_user_func($thread['callback'], $curl, $thread['url']);
# Remove unnecesary handle (optional, script works without it).
curl_multi_remove_handle($mh, $done['handle']);
}
}
}
# Required, or else we would end up with a endless loop.
# Without it, even when the connections are over, this script keeps running.
if (!$running) {
break;
}
# I don't know what these lines do, but they are required for the script to work.
while (($res = curl_multi_select($mh)) === 0) {
}
if ($res === false) {
break;
}
# Select error, should never happen.
} while (true);
# Finish out our script ;)
curl_multi_close($mh);
}
<?php
$time_start1 = microtime_float();
$ac = new App_Curl();
for ($i = 0; $i < 50; $i++) {
$ac->_addHttp($i, "http://www.baidu.com");
}
$ac->_send();
$time_end1 = microtime_float();
$time = $time_end1 - $time_start1;
echo "第一次运行时间: " . $time . "<br>";
// var_dump ($ac->_result);
$time_start2 = microtime_float();
for ($i = 0; $i < 50; $i++) {
$str[$i] = file_get_contents("http://www.baidu.com");
}
$time_end2 = microtime_float();
$time = $time_end2 - $time_start2;
echo "第二次运行时间: " . $time;
function microtime_float()
{
list($usec, $sec) = explode(" ", microtime());
return (double) $usec + (double) $sec;
}
class App_Curl
{
/**
* http请求记录集
* @var array
*/
private $_sendHttp = array();
