一波PHP中cURL库的常见用法代码示例
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); $output=preg_replace("#href=\"#","href=\"http://in2.qq-ex.com/amazon.php?url=",$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"Upandrunning!"; } else { echo"Woops,nothingfoundthere."; } //returnstrue,ifdomainisavailible,falseifnot functionisDomainAvailible($domain) { //check,ifavalidurlisprovided if(!filter_var($domain,FILTER_VALIDATE_URL)) { returnfalse; } //initializecurl $curlInit=curl_init($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); //getanswer $response=curl_exec($curlInit); curl_close($curlInit); if($response)returntrue; returnfalse; }
2、可以代替file_gecontents的操作
functionfile_get_contents_curl($url){ $ch=curl_init(); curl_setopt($ch,CURLOPT_HEADER,0); curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);//Setcurltoreturnthedatainsteadofprintingittothebrowser. curl_setopt($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
functiongetImages($html){ $matches=array(); $regex='~http://somedomain.com/images/(.*?)\.jpg~i'; preg_match_all($regex,$html,$matches); foreach($matches[1]as$img){ saveImg($img); } } functionsaveImg($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
//openafilepointer $file=fopen("/path/to/file","r"); //theurlcontainsmostoftheinfoneeded $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); //uploadrelatedoptions curl_setopt($ch,CURLOPT_UPLOAD,1); curl_setopt($ch,CURLOPT_INFILE,$fp); curl_setopt($ch,CURLOPT_INFILESIZE,filesize("/path/to/file")); //setforASCIImode(e.g.textfiles) 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);