本文实例讲述了php简单实现短网址还原的方法。分享给大家供大家参考，具体如下：
相关学习推荐：php编程（视频）
具体代码如下：
<?php$info1 = '亲！暂不能解析此类短网址。';$info2 = '亲！网址解析失败，请重试。';$info3 = '<br/><b><a href="';$info4 = '" target="_blank">立即访问>></a></b>';$info5 = '亲！不是短网址或无效。';function unshort($url){global $info1,$info2,$info3,$info4; $curl = curl_init(); curl_setopt($curl, curlopt_url, $url); curl_setopt($curl, curlopt_returntransfer,1); curl_setopt ($curl, curlopt_useragent, 'mozilla/8.0 (compatible; msie 8.0; windows 7'); curl_setopt($curl, curlopt_header, 1); curl_setopt($curl, curlopt_nobody, 0); curl_setopt($curl, curlopt_timeout, 15); curl_setopt($curl,curlopt_encoding, 'gzip'); $data = curl_exec($curl); if(!empty($data)){ $message = curl_getinfo($curl); curl_close($curl); $status = $message['http_code']; if ($status == '301' || $status == '302' ){ $urlheader = (get_headers($url,1)); $unurl = $urlheader[location]; if(is_array($unurl)) { $unurl = $unurl[0]; $unurl .=$info3.$unurl.$info4; return $unurl; } else { $unurl .=$info3.$unurl.$info4; return $unurl; } } return $info1; } return $info2;}function adfunshort($url){global $info3,$info4,$info5; $c = file_get_contents($url); $p = "/url = '(.*)';/isu"; preg_match($p, $c, $content); $unurl = $content[1]; if($unurl == '') { return $info5; } else { $unurl .=$info3.$unurl.$info4; return $unurl; }}?><form action="" method="post">短网址：<input type="text" name="turl" class="inurl" size="26" /><input type="hidden" name="url_done" value="done" /><input type="submit" value="提交" class="suburl" /></form><p id="trurl"><?php$turl = $_post['turl']?$_post['turl']:"";$url_done= $_post['url_done']?$_post['url_done']:"";if ($url_done == 'done'){$http = substr($turl,0,7); if ($http != 'http://' && $http != 'https:/'){ $turl = 'http://'.$turl; } $tturl = substr($turl,0,11); if ($tturl == 'http://adf.'){ $longurl = adfunshort($turl); }else { $longurl = unshort($turl); }echo "短网址 ".$turl." 的真实网址为：<br />$longurl ";}?>
相关学习推荐：编程视频
以上就是学习php简单实现短网址(短链)还原的方法的详细内容。