PHP的CURL⽅法curl_setopt()函数案例介绍(抓取⽹页,POST数据)通过curl_setopt()函数可以⽅便快捷的抓取⽹页(采集很⽅便⼤笑),curl_setopt 是PHP的⼀个扩展库
使⽤条件:需要在php.ini 中配置开启。(PHP 4 >= 4.0.2)
//取消下⾯的注释
extension=php_curl.dll
在Linux下⾯,需要重新编译PHP了,编译时,你需要打开编译参数——在configure命令上加上“–with-curl” 参数。curl命令发送post请求带参数
1、⼀个抓取⽹页的简单案例:
[php] view plain copy print?
// 创建⼀个新cURL资源
$ch = curl_init();
// 设置URL和相应的选项
curl_setopt($ch, CURLOPT_URL, "www.baidu/");
curl_setopt($ch, CURLOPT_HEADER, false);
// 抓取URL并把它传递给浏览器
curl_exec($ch);
//关闭cURL资源,并且释放系统资源
curl_close($ch);
2、POST数据案例:
[php] view plain copy print?
// 创建⼀个新cURL资源
$ch = curl_init();
$data = 'phone='. urlencode($phone);
/
/ 设置URL和相应的选项
curl_setopt($ch, CURLOPT_URL, "www.post/");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
// 抓取URL并把它传递给浏览器
curl_exec($ch);
//关闭cURL资源,并且释放系统资源
curl_close($ch);
3、关于SSL和Cookie
关于Cookie,你需要了解下⾯三个参数:
CURLOPT_COOKIE,在当⾯的会话中设置⼀个cookie
CURLOPT_COOKIEJAR,当会话结束的时候保存⼀个Cookie
CURLOPT_COOKIEFILE,Cookie的⽂件。
PS:新浪微博登陆API部分截取(部分我增加了点注释,全当参数翻译下。哈哈) 有兴趣的⾃⼰研究,⾃⼰挪为⼰⽤。嘿嘿
[php] view plain copy print?
/**
* Make an HTTP request
*
* @return string API results
* @ignore
*/
function http($url, $method, $postfields = NULL, $headers = array()) {
$this->http_info = array();
$ci = curl_init();
/* Curl settings */
curl_setopt($ci, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);//让cURL⾃⼰判断使⽤哪个版本
curl_setopt($ci, CURLOPT_USERAGENT, $this->useragent);//在HTTP请求中包含⼀个"User-Agent: "头的字符串。
curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, $this->connecttimeout);//在发起连接前等待的时间,如果设置为0,则⽆限等待
curl_setopt($ci, CURLOPT_TIMEOUT, $this->timeout);//设置cURL允许执⾏的最长秒数
curl_setopt($ci, CURLOPT_RETURNTRANSFER, TRUE);//返回原⽣的(Raw)输出
curl_setopt($ci, CURLOPT_ENCODING, "");//HTTP请求头中"Accept-Encoding: "的值。⽀持的编码有
"identity","deflate"和"gzip"。如果为空字符串"",请求头会发送所有⽀持的编码类型。    curl_setopt($ci, CURLOPT_SSL_VERIFYPEER, $this->ssl_verifypeer);//禁⽤后cURL将终⽌从服务端进⾏验证
curl_setopt($ci, CURLOPT_HEADERFUNCTION, array($this, 'getHeader'));//第⼀个是cURL的资源句柄,第⼆个是输出的header数据
curl_setopt($ci, CURLOPT_HEADER, FALSE);//启⽤时会将头⽂件的信息作为数据流输出
switch ($method) {
case 'POST':
curl_setopt($ci, CURLOPT_POST, TRUE);
if (!empty($postfields)) {
curl_setopt($ci, CURLOPT_POSTFIELDS, $postfields);
$this->postdata = $postfields;
}
break;
case 'DELETE':
curl_setopt($ci, CURLOPT_CUSTOMREQUEST, 'DELETE');
if (!empty($postfields)) {
$url = "{$url}?{$postfields}";
}
}
if ( isset($this->access_token) && $this->access_token )
$headers[] = "Authorization: OAuth2 ".$this->access_token;
$headers[] = "API-RemoteIP: " . $_SERVER['REMOTE_ADDR'];
curl_setopt($ci, CURLOPT_URL, $url );
curl_setopt($ci, CURLOPT_HTTPHEADER, $headers );
curl_setopt($ci, CURLINFO_HEADER_OUT, TRUE );
$response = curl_exec($ci);
$this->http_code = curl_getinfo($ci, CURLINFO_HTTP_CODE);
$this->http_info = array_merge($this->http_info, curl_getinfo($ci));
$this->url = $url;
if ($this->debug) {
echo "=====post data======\r\n";
var_dump($postfields);
echo '=====info====='."\r\n";
print_r( curl_getinfo($ci) );
echo '=====$response====='."\r\n";
print_r( $response );
}
curl_close ($ci);
return $response;
}
以上就是本⽂的全部内容,希望本⽂的内容对⼤家的学习或者⼯作能带来⼀定的帮助,同时也希望多多⽀持!

版权声明:本站内容均来自互联网,仅供演示用,请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系QQ:729038198,我们将在24小时内删除。