仿微博php生成短网址

时间：2021-04-29 21:16:38

html code

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="utf-8" />

  <title>urlShort</title>

</head>  

<body>

  <form action="urlShort.php" method="post">

    <input type="text" size="16" name="url" value="输入网址" onfocus="if(this.value=='输入网址'){this.value='';}" onblur="if(this.value==''){this.value='输入网址'};">

    <input type="submit" value=" 生成 " />

  </form>  <a href="http://hovertree.com">何问起</a>

</body>

</html>

php code

<?php

     header("Content-Type:text/html;charset=UTF-8");

     function base62($x){

        $show = '';

        while($x>0){

            $s = $x % 62;

            if ($s > 35){

                $s = chr($s + 61);

            }else if ($s > 5 && $S<=35){

                $s = chr($s + 55);

            }

            $show .= $s;

            $x = floor($x/62);

        }

        return $show;

    }  /* 何问起 hovertree.com */

    function url_short($url){

        $url = crc32($url);

        $result = sprintf("%u",$url);

        return base62($result);

    }  

    echo ("生成的新网址为：<a href='http://$_POST[url]'>".url_short($_POST['url'])."</a>");

?>

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