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URLcurl_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?url=",$output);// 释放curl句柄curl_close($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);