PHP 网址缩短 短网址程序
网址缩短 短网址程序 这是一个网上的代码,无需数据库,将要缩短的网址存在于一个同目录里的txt文件里。演示:http://www.ucmbaa.org/u/目的一是缩短了网址,二是不让搜索引擎识别这个地
这是一个网上的代码,无需数据库,将要缩短的网址存在于一个同目录里的txt文件里。演示:http://www.ucmbaa.org/u/目的一是缩短了网址,二 是不让搜索引擎识别这个地址。
网址缩短
<body> <?php /* location of file to store URLS */ $file = 'urls.txt'; /* use mod_rewrite: 0 - no or 1 - yes */ $use_rewrite = 1; /* language/style/output variables */ $l_url = 'URL'; $l_nourl = '<strong>没有输入URL地址</strong>'; $l_yoururl = '<strong>你的短网址:</strong>'; $l_invalidurl = '<strong>无效的URL.</strong>'; $l_createurl = '生成短网址'; //////////////////// NO NEED TO EDIT BELOW //////////////////// if(!is_writable($file) || !is_readable($file)) { die('Cannot write or read from file. Please CHMOD the url file (urls.txt) by default to 777 and make sure it is uploaded.'); } $action = trim($_GET['id']); $action = (empty($action) || $action == '') ? 'create' : 'redirect'; $valid = "^(https?|ftp)\:\/\/([a-z0-9+!*(),;?&=\$_.-]+(\:[a-z0-9+!*(),;?&=\$_.-]+)?@)?[a-z0-9+\$_-]+(\.[a-z0-9+\$_-]+)*(\:[0-9]{2,5})?(\/([a-z0-9+\$_-]\.?)+)*\/?(\?[a-z+&\$_.-][a-z0-9;:@/&%=+\$_.-]*)?(#[a-z_.-][a-z0-9+\$_.-]*)?\$"; $output = ''; if($action == 'create') { if(isset($_POST['create'])) { $url = trim($_POST['url']); if($url == '') { $output = $l_nourl; } else { if(eregi($valid, $url)) { $fp = fopen($file, 'a'); fwrite($fp, "{$url}\r\n"); fclose($fp); $id = count(file($file)); $dir = dirname($_SERVER['PHP_SELF']); $filename = explode('/', $_SERVER['PHP_SELF']); $filename = $filename[(count($filename) - 1)]; $shorturl = ($use_rewrite == 1) ? "http://{$_SERVER['HTTP_HOST']}{$dir}{$id}" : "http://{$_SERVER['HTTP_HOST']}{$dir}{$filename}?id={$id}"; $output = "{$l_yoururl} <a href='{$shorturl}' target='_blank'>{$shorturl}</a>"; } else { $output = $l_invalidurl; } } } } if($action == 'redirect') { $urls = file($file); $id = trim($_GET['id']) - 1; if(isset($urls[$id])) { header("Location: {$urls[$id]}"); exit; } else { die('Script error'); } } //////////////////// FEEL FREE TO EDIT BELOW //////////////////// ?> <p>短网址服务可以帮助你把一个长网址缩短,方便你在社交网络和微博上分享链接。</p> <!-- start html output --> <form action="<?=$_SERVER['PHP_SELF']?>" method="post"> <p class="response"><?=$output?></p> <p> <label for="s-url">请输入URL地址:</label> <input name="url" type="text" id="s-url" size="60" /> </p> <p> <input type="submit" class="button" name="create" value="<?=$l_createurl?>" /> </p> </form> <!-- end html output --> </body> </html> <?php ob_end_flush(); ?>
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