课课家今天跟大家分享的是如何学习PHP：6种GET和POST请求发送方法无论是畅言还是多说，我都需要从远程抓取文章的评论数，然后存入本地数据库。
AD：
在i94web博客中，我试过了畅言和多说两种社会化评论框，后来还是抛弃了畅言，不安全。
无论是畅言还是多说，我都需要从远程抓取文章的评论数，然后存入本地数据库。对于多说，请求的格式如下：
// 获取评论次数,参数是文章ID function getCommCount($postid) { $jsondata = file_get_contents(“http://api.duoshuo.com/threads/counts.json?short_name=i94web&threads=$postid”); // 设置true返回数组,不设置或者是false则返回对象 $resjson= json_decode($jsondata,true); return $resjson['response'][$postid]['comments']; }
对于远程请求，有很多种方法。今天，LZ就搜罗了六种，供大家参考。
1、用file_get_contents 以get方式获取内容：
2、用fopen打开url，用get方式获取
$fp = fopen($url, 'r'); stream_get_meta_data($fp); while(!feof($fp)) { $result .= fgets($fp, 1024); } echo “url body: $result”; fclose($fp);
3、用file_get_contents 以post方式获取内容：
$data = array ('foo' => 'bar'); $data = http_build_query($data); $opts = array ( 'http' => array ( 'method' => 'POST', 'header'=> “Content-type: application/x-www-form-urlencodedrn” . 'Content-Length: ' . strlen($data) . 'rn', 'content' => $data ) ); $context = stream_context_create($opts); $html = file_get_contents('http://localhost/e/admin/test.html', false, $context); echo $html;
4、用fsockopen函数打开url，以get方式获取完整的数据，包括header和body,fsockopen需要 PHP.ini 中 allow_url_fopen 选项开启
function get_url ($url,$cookie=false) { $url = parse_url($url); $query = $url[path].'?'.$url[query]; echo 'Query:'.$query; $fp = fsockopen( $url[host], $url[port]?$url[port]:80 , $errno, $errstr, 30); if (!$fp) { return false; } else { $request = 'GET $query HTTP/1.1rn'; $request .= 'Host: $url[host]rn'; $request .= 'Connection: Closern'; if($cookie) $request.='Cookie: $cookien'; $request.='rn'; fwrite($fp,$request); while([email protected]($fp)) { $result .= @fgets($fp, 1024); } fclose($fp); return $result; } } //获取url的html部分，去掉header function GetUrlHTML($url,$cookie=false) { $rowdata = get_url($url,$cookie); if($rowdata) { $body= stristr($rowdata,'rnrn'); $body=substr($body,4,strlen($body)); return $body; } return false; }
5、用fsockopen函数打开url，以POST方式获取完整的数据，包括header和body
function HTTP_Post($URL,$data,$cookie, $referrer='') { // parsing the given URL $URL_Info=parse_url($URL); // Building referrer if($referrer=='') // if not given use this script as referrer $referrer='111'; // making string from $data foreach($data as $key=>$value) $values[]='$key='.urlencode($value); $data_string=implode('&',$values); // Find out which port is needed – if not given use standard (=80) if(!isset($URL_Info['port'])) $URL_Info['port']=80; // building POST-request: $request.=”POST “.$URL_Info['path'].” HTTP/1.1n”; $request.=”Host: “.$URL_Info['host'].”n”; $request.=”Referer: $referern”; $request.=”Content-type: application/x-www-form-urlencodedn”; $request.='Content-length: '.strlen($data_string).”n”; $request.='Connection: closen'; $request.='Cookie: $cookien'; $request.='n'; $request.=$data_string.'n'; $fp = fsockopen($URL_Info['host'],$URL_Info['port']); fputs($fp, $request); while(!feof($fp)) { $result .= fgets($fp, 1024); } fclose($fp); return $result; }
课课家提醒大家学习PHP：GET和POST请求发送方法中，这第六种方法使用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
$ch = curl_init(); $timeout = 5; curl_setopt ($ch, CURLOPT_URL, ‘http://www.ido321.com/'); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); $file_contents = curl_exec($ch); curl_close($ch); echo $file_contents;
