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php curl自己

吳曉飛1年前9瀏覽0評論
< p >PHP cURL 自己文章

< p >cURL可以理解為一個包含庫和命令行工具的網(wǎng)絡(luò)傳輸工具,通過cURL可以發(fā)送Http請求和FTP請求,也可以通過cURL模擬瀏覽器,抓取網(wǎng)頁數(shù)據(jù)。PHP cURL是一個針對cURL的擴展,用于在PHP腳本中使用cURL的功能。在PHP中使用cURL可以實現(xiàn)很多網(wǎng)絡(luò)操作,比如獲取網(wǎng)頁內(nèi)容、提交表單、上傳文件、下載文件等等。

< p >為了更好的理解PHP cURL,下面會用一些例子進行說明。

< p >1、發(fā)送GET請求

//創(chuàng)建cURL資源對象
$ch = curl_init();
//設(shè)置請求的URL
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");
//獲取請求結(jié)果而不輸出
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
//執(zhí)行請求
$output = curl_exec($ch);
//關(guān)閉cURL資源對象
curl_close($ch);
echo $output;
< p >上述代碼通過curl_init()函數(shù)創(chuàng)建了一個cURL資源對象$ch,然后設(shè)置了請求的URL為http://www.example.com/,設(shè)置了CURLOPT_RETURNTRANSFER選項為1,這可以讓curl_exec()函數(shù)在成功時返回執(zhí)行的結(jié)果,而不是直接輸出結(jié)果。最后通過curl_close()函數(shù)關(guān)閉cURL資源對象,輸出結(jié)果。

< p >2、發(fā)送POST請求

//創(chuàng)建cURL資源對象
$ch = curl_init();
//設(shè)置請求的URL
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");
//發(fā)送POST請求
curl_setopt($ch, CURLOPT_POST, 1);
//POST數(shù)據(jù)
$post_data = array(
'username' =>'testuser',
'password' =>'testpass'
);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
//獲取請求結(jié)果而不輸出
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
//執(zhí)行請求
$output = curl_exec($ch);
//關(guān)閉cURL資源對象
curl_close($ch);
echo $output;
< p >上述代碼通過curl_setopt()函數(shù)設(shè)置了POST請求的參數(shù),并通過curl_setopt()函數(shù)設(shè)置了POST請求發(fā)送的數(shù)據(jù)為$post_data。最后通過curl_exec()函數(shù)執(zhí)行請求,輸出結(jié)果。

< p >3、抓取網(wǎng)頁數(shù)據(jù)

//創(chuàng)建cURL資源對象
$ch = curl_init();
//設(shè)置請求的URL
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");
//獲取請求結(jié)果而不輸出
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
//設(shè)置瀏覽器模擬
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Firefox/60.0');
//執(zhí)行請求
$output = curl_exec($ch);
//關(guān)閉cURL資源對象
curl_close($ch);
//使用正則表達式提取網(wǎng)頁標題
preg_match("/(.*)<\/title>/siU", $output, $matches);
echo $matches[1];</pre>< p >上述代碼通過curl_setopt()函數(shù)設(shè)置了瀏覽器模擬,以便能夠模擬瀏覽器訪問的結(jié)果。最后通過正則表達式提取網(wǎng)頁標題。</p>< p >總結(jié):PHP cURL是一個非常強大的網(wǎng)絡(luò)傳輸工具,可以實現(xiàn)很多任務(wù)。在使用時要注意設(shè)置正確的URL和參數(shù),理解好每個選項的含義。希望本篇文章能對大家理解PHP cURL有所幫助。</p></div><div   id="phr7r5x"   class="share"></div><div   id="7jbxr5d"   class="Prev_Next"><div   id="vbtx5vx"   class="box">上一篇<a href="http://www.lofty888.cn/post/1352471.html">css 超出高度溢出隱藏</a></div><div   id="p7p7pvx"   class="box">下一篇<a href="http://www.lofty888.cn/post/1420540.html">php curl類庫</a></div></div></div><div   id="lz5xrtx"   class="related related-list"><h5>相關(guān)文章</h5><ul><li><a href="http://www.lofty888.cn/post/1624732.html">php h5開發(fā)工具</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624731.html">php h5師資培訓</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624730.html">php h5封裝app</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624729.html">php h5對比java</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624728.html">php h5對接 java接口</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624727.html">php h5實現(xiàn)聊天室</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624726.html">php h5實現(xiàn)網(wǎng)頁開發(fā)實例</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624725.html">php h5實現(xiàn)網(wǎng)頁開發(fā)</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624724.html">php h5實現(xiàn)拍照獲取圖片功能</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624723.html">php h5實現(xiàn)圖片的上傳圖片</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624722.html">php h5實現(xiàn)圖片的上傳</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624721.html">php h5大文件上傳</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624720.html">php h5多頁面預加載</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624719.html">php h5多圖片上傳</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624718.html">php h5多圖上傳加預覽</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1331198.html">forum.php手機版無法訪問</a><span>07-03</span></li><li><a href="http://www.lofty888.cn/post/1420952.html">php date 微妙</a><span>07-13</span></li><li><a href="http://www.lofty888.cn/post/1426161.html">php for allowed</a><span>07-11</span></li><li><a href="http://www.lofty888.cn/post/1389394.html">git php源碼</a><span>08-02</span></li><li><a href="http://www.lofty888.cn/post/1415057.html">php artisan 命令</a><span>07-17</span></li><li><a href="http://www.lofty888.cn/post/1322311.html">10天學會php第七版</a><span>07-02</span></li><li><a href="http://www.lofty888.cn/post/67507.html">wordpress安裝好后無法打開首頁</a><span>01-22</span></li><li><a href="http://www.lofty888.cn/post/1392692.html">iis搭建php服務(wù)器搭建</a><span>08-04</span></li><li><a href="http://www.lofty888.cn/post/1630142.html">php str_split空字符串</a><span>09-23</span></li><li><a href="http://www.lofty888.cn/post/1445816.html">php httpsqs</a><span>08-15</span></li><li><a href="http://www.lofty888.cn/post/1395182.html">js 觸發(fā)php</a><span>07-28</span></li><li><a href="http://www.lofty888.cn/post/65440.html">Web開發(fā)和Django就能拿高工資嗎</a><span>01-22</span></li><li><a href="http://www.lofty888.cn/post/130545.html">什么是爬爬墻游戲</a><span>01-29</span></li><li><a href="http://www.lofty888.cn/post/65637.html">微信OAuth20授權(quán)回調(diào)頁面域名設(shè)置問題怎么解決</a><span>01-21</span></li><li><a href="http://www.lofty888.cn/post/1427310.html">php fput木馬</a><span>07-10</span></li></ul></div></div></div></div><div   class="ntn7tjb"   id="footer"><div   id="rtpztld"   class="copyright"><div   id="npnvrrl"   class="container"><p>老白網(wǎng)絡(luò) (http://www.lofty888.cn/) 前端 后端 zblog主題.<a href="http://www.lofty888.cn/sitemap/post.html">網(wǎng)站地圖</a><a href="http://www.lofty888.cn/sitemap/post.xml">xml</a></p><span>Powered By Z-BlogPHP</span></div></div></div><div   id="p57pbdv"   class="bottom_tools"><a id="scrollUp" href="javascript:;" title="返回頂部"><i class="fa fa-angle-up"></i></a></div><script type="text/javascript" src="http://cdn.staticfile.org/jquery/2.2.4/jquery.min.js"></script><script src="http://cdn.yzktw.com.cn/zb_users/theme/ydproduct/script/ads.js" type="text/javascript"></script><script src="http://cdn.yzktw.com.cn/zb_users/theme/ydproduct/script/common.min.js" type="text/javascript"></script><script src="http://cdn.staticfile.org/prettify/r298/prettify.min.js" type="text/javascript"></script><script>jQuery(window).load(function(){jQuery("pre").addClass("prettyprint");prettyPrint();});</script><div   class="ldz7tzd"   id="ly_cache" data-id="1420548"></div>
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