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php curl title

劉姿婷1年前9瀏覽0評論
php curl是一種十分強大的工具,可以用來訪問web服務,模擬用戶登錄,提交表單等等。在很多情況下,我們需要從網頁中獲取一些數據,比如說標題等信息,這時候就可以使用php curl來實現。下面,我就來為大家講解一下如何使用php curl來獲取網頁標題。 第一步,我們需要先初始化curl。這可以通過curl_init()函數來實現。代碼如下:
$ch = curl_init();
第二步,我們需要設置curl的相關選項,比如說要訪問的url地址,超時時間,是否需要返回header等。這可以通過curl_setopt()函數來實現。其中,我們需要設置CURLOPT_URL和CURLOPT_RETURNTRANSFER選項來指定要訪問的url和是否需要返回結果。代碼如下:
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
在這里,$url是要訪問的網址,可以改成其他的url地址。 第三步,我們需要執行curl操作,獲取網頁內容。這可以通過curl_exec()函數來實現。代碼如下:
$content = curl_exec($ch);
第四步,我們需要關閉curl句柄,并釋放相關資源,這可以通過curl_close()函數來實現。代碼如下:
curl_close($ch);
第五步,我們需要從獲取到的網頁內容中提取出網頁標題,這可以通過正則表達式來實現。代碼如下:
preg_match("/(.*)<\/title>/i", $content, $matches);
$title = $matches[1];</code></pre>在這里,我們使用了preg_match()函數來匹配網頁標題,然后從匹配結果中提取出標題內容。
綜合起來,我們的完整代碼如下:<pre><code>$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
$content = curl_exec($ch);
curl_close($ch);
preg_match("/<title>(.*)<\/title>/i", $content, $matches);
$title = $matches[1];</code></pre>以上就是使用php curl來獲取網頁標題的完整過程。除了標題之外,我們還可以從網頁中獲取其他的信息,比如說網頁的Meta信息,頁面中的圖片等等。使用php curl,你可以方便地獲取到這些信息,幫助你更好地分析網頁數據,開發出更好的應用程序。</div><div   id="wiyqu22"   class="share"></div><div   id="amsyuiw"   class="Prev_Next"><div   id="agce2wa"   class="box">上一篇<a href="http://www.lofty888.cn/post/1420002.html">php curl verbose</a></div><div   id="wyqic00"   class="box">下一篇<a href="http://www.lofty888.cn/post/1419993.html">php curl ucenter</a></div></div></div><div   id="cauquyy"   class="related related-list"><h5>相關文章</h5><ul><li><a href="http://www.lofty888.cn/post/1624732.html">php h5開發工具</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實現聊天室</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624726.html">php h5實現網頁開發實例</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624725.html">php h5實現網頁開發</a><span>08-05</span></li><li><a href="http://www.lofty888.cn/post/1624724.html">php h5實現拍照獲取圖片功能</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/67371.html">php能不能在tomcat上運行</a><span>01-22</span></li><li><a href="http://www.lofty888.cn/post/1444572.html">php i i</a><span>08-14</span></li><li><a href="http://www.lofty888.cn/post/1604532.html">php this fetch</a><span>10-03</span></li><li><a href="http://www.lofty888.cn/post/1377717.html">array 去重 php</a><span>07-26</span></li><li><a href="http://www.lofty888.cn/post/1419266.html">php crawler爬蟲</a><span>07-15</span></li><li><a href="http://www.lofty888.cn/post/63233.html">數據庫中MySQL和MSSQL具體有什么區別</a><span>01-22</span></li><li><a href="http://www.lofty888.cn/post/692334.html">PHP連接數據庫技巧,BAT等一線互聯網公司的運營崗位等你來挑戰</a><span>04-22</span></li><li><a href="http://www.lofty888.cn/post/1322154.html">$ a 在php中是啥意思</a><span>07-02</span></li><li><a href="http://www.lofty888.cn/post/690193.html">php如何調數據庫數據(詳解php連接數據庫及數據調用方法)</a><span>04-21</span></li><li><a href="http://www.lofty888.cn/post/1383403.html">const php 類</a><span>07-30</span></li><li><a href="http://www.lofty888.cn/post/1414138.html">php apm 性能</a><span>07-17</span></li><li><a href="http://www.lofty888.cn/post/1402433.html">nginx index.php 隱藏</a><span>07-24</span></li><li><a href="http://www.lofty888.cn/post/1426560.html">php foreach數組</a><span>07-10</span></li><li><a href="http://www.lofty888.cn/post/354311.html">支付寶收款盒怎么改成收微信款</a><span>02-09</span></li><li><a href="http://www.lofty888.cn/post/1395336.html">json 擴展 php</a><span>07-28</span></li></ul></div></div></div></div><div   class="wk2kooo"   id="footer"><div   id="w00ew0e"   class="copyright"><div   id="mmuauac"   class="container"><p>老白網絡 (http://www.lofty888.cn/) 前端 后端 zblog主題.<a href="http://www.lofty888.cn/sitemap/post.html">網站地圖</a><a href="http://www.lofty888.cn/sitemap/post.xml">xml</a></p><span>Powered By Z-BlogPHP</span></div></div></div><div   id="saw20sw"   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="caeuqs0"   id="ly_cache" data-id="1419988"></div>
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