本文实例讲述了php curl批处理实现可控并发异步操作。分享给大家供大家参考，具体如下：
通常情况下 PHP 中的 cURL 是阻塞运行的，就是说创建一个 cURL 请求以后必须等它执行成功或者超时才会执行下一个请求:API接口访问一般会首选CURL
在实际项目或者自己编写小工具(比如新闻聚合,商品价格监控,比价)的过程中, 通常需要从第3方网站或者API接口获取数据, 在需要处理1个URL队列时, 为了提高性能, 可以采用cURL提供的curl_multi_*族函数实现简单的并发.
<?php
include 'curl.class.php';
function callback($response, $info, $error, $request)
{
echo 'response:<br>';
print_r($response);
echo '<br>' . date("Y-m-d H:i:s") . ' <br>';
echo '<br>' . str_repeat("-", 100) . '<br>';
}
$USER_COOKIE = (!empty($_REQUEST['cookie'])) ? $_REQUEST['cookie'] : file_get_contents("cookie.txt");
$curl = new Curl ("callback");
$data = array(
array(
'url' => 'http://dyactive2.vip.xunlei.com/com_sign/?game=qmr&type=rec_gametime&referfrom=&rt=0.42521539455332336', //秦美人
'method' => 'POST',
'post_data' => '',
'header' => null,
'options' => array(
CURLOPT_REFERER => "http://niu.xunlei.com/entergame/?gameNo=qmr&fenQuNum=3",
CURLOPT_COOKIE => $USER_COOKIE,
)
),
array(
'url' => 'http://dyactive2.vip.xunlei.com/com_sign/?game=sq&type=rec_gametime&referfrom=&rt=0.42521539455332336', //神曲
'method' => 'POST',
'post_data' => '',
'header' => null,
'options' => array(
CURLOPT_REFERER => "http://niu.xunlei.com/entergame/?gameNo=sq&fenQuNum=41",
CURLOPT_COOKIE => $USER_COOKIE,
)
),
array(
'url' => 'http://dyactive2.vip.xunlei.com/com_sign/?game=frxz&type=rec_gametime&referfrom=&rt=0.42521539455332336', //凡人修真
'method' => 'POST',
'post_data' => '',
'header' => null,
'options' => array(
CURLOPT_REFERER => "http://niu.xunlei.com/entergame/?gameNo=frxz&fenQuNum=3",
CURLOPT_COOKIE => $USER_COOKIE,
)
),
array(
'url' => 'http://dyactive2.vip.xunlei.com/com_sign/?game=smxj&type=rec_gametime&referfrom=&rt=0.42521539455332336', //神魔仙界
'method' => 'POST',
'post_data' => '',
'header' => null,
'options' => array(
CURLOPT_REFERER => "http://niu.xunlei.com/entergame/?gameNo=smxj&fenQuNum=2",
CURLOPT_COOKIE => $USER_COOKIE,
)
),
array(
'url' => 'http://dyactive2.vip.xunlei.com/com_sign/?game=qsqy&type=rec_gametime&referfrom=&rt=0.42521539455332336', //倾世情缘
'method' => 'POST',
'post_data' => '',
'header' => null,
'options' => array(
CURLOPT_REFERER => "http://niu.xunlei.com/entergame/?gameNo=qsqy&fenQuNum=11",
CURLOPT_COOKIE => $USER_COOKIE,
)
),
);
foreach ($data as $val) {
$request = new Curl_request ($val ['url'], $val ['method'], $val ['post_data'], $val ['header'], $val ['options']);
$curl->add($request);
}
$curl->execute();
echo $curl->display_errors();
使用下来效果很好，没有副作用，并发数可控，应用之处多多，自己发挥想象吧
<?php
/**
* cURL批量处理 工具类
*
* @since Version 1.0
* @author Justmepzy <justmepzy@gmail.com>
* @link http://t.qq.com/JustPzy
*/
/**
*单一的请求对象
*/
class Curl_request {
public $url = '';
public $method = 'GET';
public $post_data = null;
public $headers = null;
public $options = null;
/**
*
* @param string $url
* @param string $method
* @param string $post_data
* @param string $headers
* @param array $options
* @return void
*/
public function __construct($url, $method = 'GET', $post_data = null, $headers = null, $options = null) {
$this->url = $url;
$this->method = strtoupper( $method );
$this->post_data = $post_data;
$this->headers = $headers;
$this->options = $options;
}
/**
* @return void
*/
public function __destruct() {
unset ( $this->url, $this->method, $this->post_data, $this->headers, $this->options );
}
}
/**
* 包含请求列队处理
*/
class Curl {
/**
* 请求url个数
* @var int
*/
private $size = 5;
/**
* 等待所有cURL批处理中的活动连接等待响应时间
* @var int
*/
private $timeout = 5;
/**
* 完成请求回调函数
* @var string
*/
private $callback = null;
/**
* cRUL配置
* @var array
*/
private $options = array (CURLOPT_SSL_VERIFYPEER => 0,CURLOPT_RETURNTRANSFER => 1,CURLOPT_CONNECTTIMEOUT => 30 );
/**
* 请求头
* @var array
*/
private $headers = array ();
/**
* 请求列队
* @var array
*/
private $requests = array ();
/**
* 请求列队索引
* @var array
*/
private $request_map = array ();
/**
* 错误
* @var array
*/
private $errors = array ();
/**
* @access public
* @param string $callback 回调函数
* 该函数有4个参数($response,$info,$error,$request)
* $response url返回的body
* $info cURL连接资源句柄的信息
* $error 错误
* $request 请求对象
*/
public function __construct($callback = null) {
$this->callback = $callback;
}
/**
* 添加一个请求对象到列队
* @access public
* @param object $request
* @return boolean
*/
public function add($request) {
$this->requests [] = $request;
return TRUE;
}
/**
* 创建一个请求对象并添加到列队
* @access public
* @param string $url
* @param string $method
* @param string $post_data
* @param string $headers
* @param array $options
* @return boolean
*/
public function request($url, $method = 'GET', $post_data = null, $headers = null, $options = null) {
$this->requests [] = new Curl_request ( $url, $method, $post_data, $headers, $options );
return TRUE;
}
/**
* 创建GET请求对象
* @access public
* @param string $url
* @param string $headers
* @param array $options
* @return boolean
*/
public function get($url, $headers = null, $options = null) {
return $this->request ( $url, "GET", null, $headers, $options );
}
/**
* 创建一个POST请求对象
* @access public
* @param string $url
* @param string $post_data
* @param string $headers
* @param array $options
* @return boolean
*/
public function post($url, $post_data = null, $headers = null, $options = null) {
return $this->request ( $url, "POST", $post_data, $headers, $options );
}
/**
* 执行cURL
* @access public
* @param int $size 最大连接数
* @return Ambigous <boolean, mixed>|boolean
*/
public function execute($size = null) {
if (sizeof ( $this->requests ) == 1) {
return $this->single_curl ();
} else {
return $this->rolling_curl ( $size );
}
}
/**
* 单个url请求
* @access private
* @return mixed|boolean
*/
private function single_curl() {
$ch = curl_init ();
$request = array_shift ( $this->requests );
$options = $this->get_options ( $request );
curl_setopt_array ( $ch, $options );
$output = curl_exec ( $ch );
$info = curl_getinfo ( $ch );
// it's not neccesary to set a callback for one-off requests
if ($this->callback) {
$callback = $this->callback;
if (is_callable ( $this->callback )) {
call_user_func ( $callback, $output, $info, $request );
}
} else
return $output;
return true;
}
/**
* 多个url请求
* @access private
* @param int $size 最大连接数
* @return boolean
*/
private function rolling_curl($size = null) {
if ($size)
$this->size = $size;
else
$this->size = count($this->requests);
if (sizeof ( $this->requests ) < $this->size)
$this->size = sizeof ( $this->requests );
if ($this->size < 2)
$this->set_error ( 'size must be greater than 1' );
$master = curl_multi_init ();
//添加cURL连接资源句柄到map索引
for($i = 0; $i < $this->size; $i ++) {
$ch = curl_init ();
$options = $this->get_options ( $this->requests [$i] );
curl_setopt_array ( $ch, $options );
curl_multi_add_handle ( $master, $ch );
$key = ( string ) $ch;
$this->request_map [$key] = $i;
}
$active = $done = null;
do {
while ( ($execrun = curl_multi_exec ( $master, $active )) == CURLM_CALL_MULTI_PERFORM )
;
if ($execrun != CURLM_OK)
break;
//有一个请求完成则回调
while ( $done = curl_multi_info_read ( $master ) ) {
//$done 完成的请求句柄
$info = curl_getinfo ( $done ['handle'] );//
$output = curl_multi_getcontent ( $done ['handle'] );//
$error = curl_error ( $done ['handle'] );//
$this->set_error ( $error );
//调用回调函数,如果存在的话
$callback = $this->callback;
if (is_callable ( $callback )) {
$key = ( string ) $done ['handle'];
$request = $this->requests [$this->request_map [$key]];
unset ( $this->request_map [$key] );
call_user_func ( $callback, $output, $info, $error, $request );
}
curl_close ( $done ['handle'] );
//从列队中移除已经完成的request
curl_multi_remove_handle ( $master, $done ['handle'] );
}
//等待所有cURL批处理中的活动连接
if ($active)
curl_multi_select ( $master, $this->timeout );
} while ( $active );
//完成关闭
curl_multi_close ( $master );
return true;
}
/**
* 获取没得请求对象的cURL配置
* @access private
* @param object $request
* @return array
*/
private function get_options($request) {
$options = $this->__get ( 'options' );
if (ini_get ( 'safe_mode' ) == 'Off' || ! ini_get ( 'safe_mode' )) {
$options [CURLOPT_FOLLOWLOCATION] = 1;
$options [CURLOPT_MAXREDIRS] = 5;
}
$headers = $this->__get ( 'headers' );
if ($request->options) {
$options = $request->options + $options;
}
$options [CURLOPT_URL] = $request->url;
if ($request->post_data && strtolower($request->method) == 'post' ) {
$options [CURLOPT_POST] = 1;
$options [CURLOPT_POSTFIELDS] = $request->post_data;
}
if ($headers) {
$options [CURLOPT_HEADER] = 0;
$options [CURLOPT_HTTPHEADER] = $headers;
}
return $options;
}
/**
* 设置错误信息
* @access public
* @param string $msg
*/
public function set_error($msg) {
if (! empty ( $msg ))
$this->errors [] = $msg;
}
/**
* 获取错误信息
* @access public
* @param string $open
* @param string $close
* @return string
*/
public function display_errors($open = '<p>', $close = '</p>') {
$str = '';
foreach ( $this->errors as $val ) {
$str .= $open . $val . $close;
}
return $str;
}
/**
* @access public
* @param string $name
* @param string $value
* @return boolean
*/
public function __set($name, $value) {
if ($name == 'options' || $name == 'headers') {
$this->{$name} = $value + $this->{$name};
} else {
$this->{$name} = $value;
}
return TRUE;
}
/**
*
* @param string $name
* @return mixed
* @access public
*/
public function __get($name) {
return (isset ( $this->{$name} )) ? $this->{$name} : null;
}
/**
* @return void
* @access public
*/
public function __destruct() {
unset ( $this->size, $this->timeout, $this->callback, $this->options, $this->headers, $this->requests, $this->request_map, $this->errors );
}
}
// END Curl Class
/* End of file curl.class.php */
希望本文所述对大家PHP程序设计有所帮助。