PHP中4种常用的抓取网络数据方法
PHP中4种常用的抓取网络数据方法
本小节的名称为 fsockopen,curl与file_get_contents,具体是探讨这三种方式进行网络数据输入输出的一些汇总。关于 fsockopen 前面已经谈了不少,下面开始转入其它。这里先简单罗列一下一些常见的抓取网络数据的一些方法。
1. 用 file_get_contents 以 get 方式获取内容:
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$url = 'http://localhost/test2.php'; $html = file_get_contents($url); echo $html; |
2. 用fopen打开url,以get方式获取内容
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$url = 'http://localhost/test2.php'; $fp = fopen($url, 'r'); stream_get_meta_data($fp); $result = ''; while(!feof($fp)) { $result .= fgets($fp, 1024); } echo "url body: $result"; fclose($fp); |
3. 用file_get_contents函数,以post方式获取url
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$data = array( 'foo'=>'bar', 'baz'=>'boom', 'site'=>'www.jb51.net', 'name'=>'nowa magic');
$data = http_build_query($data);
//$postdata = http_build_query($data); $options = array( 'http' => array( 'method' => 'POST', 'header' => 'Content-type:application/x-www-form-urlencoded', 'content' => $data //'timeout' => 60 * 60 // 超时时间(单位:s) ) );
$url = "http://localhost/test2.php"; $context = stream_context_create($options); $result = file_get_contents($url, false, $context);
echo $result; |
4、使用curl库,使用curl库之前,可能需要查看一下php.ini是否已经打开了curl扩展
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$url = 'http://localhost/test2.php?site=jb51.net'; $ch = curl_init(); $timeout = 5; curl_setopt ($ch, CURLOPT_URL, $url); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); $file_contents = curl_exec($ch); curl_close($ch); echo $file_contents; |

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