php curl请求实例

curl post json 数据

    $data = array("name" => "Hagrid", "age" => "36");                                                                      
    $data_string = json_encode($data);       
    $ch = curl_init('http://api.local/rest/users');        
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");                            
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);  
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);  
    curl_setopt($ch, CURLOPT_HTTPHEADER, array(                   
        'Content-Type: application/json',  
        'Content-Length: ' . strlen($data_string))           
    );                                                                                                                     
    $result = curl_exec($ch);  

curl post 自定义环境变量

设置 CURLOPT_HTTPHEADER
【$_SERVER['PHP_AUTH_USER'] 是由服务器控制产生的变量，你不能给它赋值】

function curlRequest($url, $data_string) {
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array(        
        'bing:bingbing')
    );
    $result = curl_exec($ch);
    return $result;
}

curl post xml数据

$header[] = "Content-type: text/xml"; //定义content-type为xml
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml_data);
$response = curl_exec($ch);
if (curl_errno($ch)) {
        print curl_error($ch);
}
curl_close($ch);

"<xml>

<ToUserName><![CDATA[%s]]></ToUserName>

<FromUserName><![CDATA[%s]]></FromUserName>

<CreateTime>%s</CreateTime>

<MsgType><![CDATA[%s]]></MsgType>

<Content><![CDATA[%s]]></Content>

</xml>"

/**
 * curl获取指定路径内容
 */
function curlRequest($url, $method = '', $postdata = '', $isjson=0) {
    $ch = curl_init();
    $post = $method && strtolower($method) == 'post' ? 1 : 0;
    curl_setopt($ch, CURLOPT_URL, $url);
    if($post) {
        curl_setopt($ch, CURLOPT_POST, $post);
        if($postdata) {
           if(!$isjson) { 
                $postdata = http_build_query($postdata);
           }
           curl_setopt($ch, CURLOPT_POSTFIELDS, $postdata);
        }
    }
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 60);
    curl_setopt($ch, CURLOPT_TIMEOUT, 80);
    if($isjson) {
        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
            'Content-Type:application/json',
            'Content-Length:'. strlen($postdata)
        ));
    }    
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)");
    $data = curl_exec($ch);
    $datainfo = curl_getinfo($ch);
    curl_close($ch);
    if($datainfo['http_code'] == 200) {
        return array($data, $datainfo);
    } else {
        return array();
    }
}

curl 模拟百度蜘蛛访问

$url = 'xxxxxxxx?' . time();
echo curl_get($url);
/**
 * 获取内容
 */
function curl_get($url) {
   $header = array(
       'CLIENT-IP:' . mt_rand(1, 255) . '.' . mt_rand(1, 255) . '.' . mt_rand(1, 255) . '.'. mt_rand(1, 255) . '',
       'X-FORWARDED-FOR:' . mt_rand(1, 255) . '.' . mt_rand(1, 255) . '.' . mt_rand(1, 255) . '.' . mt_rand(1, 255) . '',
   );
   $ch = curl_init(); //初始化curl
   curl_setopt($ch, CURLOPT_URL, $url); //设置链接
   curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //设置是否返回信息
   curl_setopt($ch, CURLOPT_HTTPHEADER, $header); //设置HTTP头
   curl_setopt($ch, CURLOPT_HEADER, true);
   curl_setopt($ch, CURLOPT_TIMEOUT,60); //超时设置
   curl_setopt($ch, CURLOPT_REFERER, 'http://www.baidu.com');
   curl_setopt($ch, CURLOPT_USERAGENT, 'Baiduspider+(+http://www.baidu.com/search/spider.htm)');
   curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
   $content = curl_exec($ch); //接收返回信息
   return $content;
}

curl 获取百度搜索关键词内容

$gpc = stf%3D1434211200%2C1434297599|stftype%3D2      时间范围，无此参数表示全部数据
$pos = 0，10，20,...10n 分页
wd 关键字 
$url = 'http://www.baidu.com/s?wd=site%3Axxx.xxx.com%20%E8%B5%8C&gpc=' . $gpc . '&cl=3&pn=' . $pos;