php 的CURL是不错的功能,下面收藏几段不错的片段

0、基本例子

一般流程:

$to_url=$_GET['url']; print_r($_GET); if(substr($to_url,0,1)=='/'){ $to_url="http://www.amazon.com".$to_url; } echo $to_url; //初始化 $ch = curl_init(); //设置选项，包括URL curl_setopt($ch, CURLOPT_URL, $to_url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_HEADER, 0); //执行并获取HTML文档内容 $output = curl_exec($ch); $output=preg_replace("#href="#","href="http://in2.qq-ex.com/amazon.php",$output); // 释放curl句柄 curl_close($ch); echo $output; // 指定代理地址 curl_setopt($ch, CURLOPT_PROXY, '11.11.11.11:8080'); // 如果需要的话，提供用户名和密码 curl_setopt($ch, CURLOPT_PROXYUSERPWD,'user:pass');

1、测试网站是否运行正常

if (isDomainAvailible('http://gz.itownet.cn')) { echo "Up and running!"; } else { echo "Woops, nothing found there."; } //returns true, if domain is availible, false if not function isDomainAvailible($domain) { //check, if a valid url is provided if(!filter_var($domain, FILTER_VALIDATE_URL)) { return false; } //initialize curl $curlInit = curl_init($domain); curl_setopt($curlInit,CURLOPT_CONNECTTIMEOUT,10); curl_setopt($curlInit,CURLOPT_HEADER,true); curl_setopt($curlInit,CURLOPT_NOBODY,true); curl_setopt($curlInit,CURLOPT_RETURNTRANSFER,true); //get answer $response = curl_exec($curlInit); curl_close($curlInit); if ($response) return true; return false; }

2、可以代替file_gecontents的操作

function file_get_contents_curl($url) { $ch = curl_init(); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //Set curl to return the data instead of printing it to the browser. curl_setopt($ch, CURLOPT_URL, $url); $data = curl_exec($ch); curl_close($ch); return $data; }

3、保存某个网站下的所有图片

function getImages($html) { $matches = array(); $regex = '~http://somedomain.com/images/(.*?).jpg~i'; preg_match_all($regex, $html, $matches); foreach ($matches[1] as $img) { saveImg($img); } } function saveImg($name) { $url = 'http://somedomain.com/images/'.$name.'.jpg'; $data = get_data($url); file_put_contents('photos/'.$name.'.jpg', $data); } $i = 1; $l = 101; while ($i < $l) { $html = get_data('http://somedomain.com/id/'.$i.'/'); getImages($html); $i += 1; }

4、FTP应用

// open a file pointer $file = fopen("/path/to/file", "r"); // the url contains most of the info needed $url = "ftp://username:password@mydomain.com:21/path/to/new/file"; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // upload related options curl_setopt($ch, CURLOPT_UPLOAD, 1); curl_setopt($ch, CURLOPT_INFILE, $fp); curl_setopt($ch, CURLOPT_INFILESIZE, filesize("/path/to/file")); // set for ASCII mode (e.g. text files) curl_setopt($ch, CURLOPT_FTPASCII, 1); $output = curl_exec($ch); curl_close($ch);

5、使用curl发送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);