PHP的curl_setopt()函數(shù)案例介紹(抓取網(wǎng)頁,POST數(shù)據(jù))
- 發(fā)布時間: 2015-03-02 12:03:39
- 瀏覽次數(shù): 2568
1、 一個抓取網(wǎng)頁的簡單案例:
// 創(chuàng)建一個新cURL資源 $ch = curl_init(); // 設(shè)置URL和相應(yīng)的選項 curl_setopt($ch, CURLOPT_URL, "http://www.baidu.com/"); curl_setopt($ch, CURLOPT_HEADER, false); // 抓取URL并把它傳遞給瀏覽器 curl_exec($ch); //關(guān)閉cURL資源,并且釋放系統(tǒng)資源 curl_close($ch);
2、POST數(shù)據(jù)案例:
// 創(chuàng)建一個新cURL資源 $ch = curl_init(); $data = 'phone='. urlencode($phone); // 設(shè)置URL和相應(yīng)的選項 curl_setopt($ch, CURLOPT_URL, "http://www.post.com/"); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, $data); // 抓取URL并把它傳遞給瀏覽器 curl_exec($ch); //關(guān)閉cURL資源,并且釋放系統(tǒng)資源 curl_close($ch);
3、關(guān)于SSL和Cookie
關(guān)于SSL也就是HTTPS協(xié)議,你只需要把CURLOPT_URL連接中的http://變成https://就可以了。當(dāng)然,還有一個參數(shù)叫CURLOPT_SSL_VERIFYHOST可以設(shè)置為驗證站點。
關(guān)于Cookie,你需要了解下面三個參數(shù):
CURLOPT_COOKIE,在當(dāng)面的會話中設(shè)置一個cookie
CURLOPT_COOKIEJAR,當(dāng)會話結(jié)束的時候保存一個Cookie
CURLOPT_COOKIEFILE,Cookie的文件。
PS:新浪微博登陸API部分截取
/** * Make an HTTP request * * @return string API results * @ignore */ function http($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);//讓cURL自己判斷使用哪個版本 curl_setopt($ci, CURLOPT_USERAGENT, $this->useragent);//在HTTP請求中包含一個"User-Agent: "頭的字符串。 curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, $this->connecttimeout);//在發(fā)起連接前等待的時間,如果設(shè)置為0,則無限等待 curl_setopt($ci, CURLOPT_TIMEOUT, $this->timeout);//設(shè)置cURL允許執(zhí)行的最長秒數(shù) curl_setopt($ci, CURLOPT_RETURNTRANSFER, TRUE);//返回原生的(Raw)輸出 curl_setopt($ci, CURLOPT_ENCODING, "");//HTTP請求頭中"Accept-Encoding: "的值。支持的編碼有"identity","deflate"和"gzip"。如果為空字符串"",請求頭會發(fā)送所有支持的編碼類型。 curl_setopt($ci, CURLOPT_SSL_VERIFYPEER, $this->ssl_verifypeer);//禁用后cURL將終止從服務(wù)端進(jìn)行驗證 curl_setopt($ci, CURLOPT_HEADERFUNCTION, array($this, 'getHeader'));//第一個是cURL的資源句柄,第二個是輸出的header數(shù)據(jù) curl_setopt($ci, CURLOPT_HEADER, FALSE);//啟用時會將頭文件的信息作為數(shù)據(jù)流輸出 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; }