php调用新浪微博短链接api接口地址例子

xml:http://api.t.sina.com.cn/short_url/shorten.xml
json:http://api.t.sina.com.cn/short_url/shorten.json

xml:http://api.t.sina.com.cn/short_url/shorten.xml?source=123456789&url_long==https://www.111com.net

返回内容为：

    
          http://t.cn/123456789
          =https://www.111com.net
          0
    

json:http://api.t.sina.com.cn/short_url/shorten.json?source=123456789&url_long=https://www.111com.net

session_start();
$allow_sep = '2';
if (isset($_SESSION['post_sep'])) {
    if (time() - $_SESSION['post_sep'] < $allow_sep) {
        die('请不要频繁刷新，休息2秒再刷新吧');
    } else {
        $_SESSION['post_sep'] = time();
    }
} else {
    $_SESSION['post_sep'] = time();
}
?>

#短连接生成算法
  
    class Short_Url {
        #字符表
        public static $charset = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";

        public static function short($url) {
            $key = "alexis";
            $urlhash = md5($key . $url);
            $len = strlen($urlhash);

            #将加密后的串分成4段，每段4字节，对每段进行计算，一共可以生成四组短连接
            for ($i = 0; $i < 4; $i++) {
                $urlhash_piece = substr($urlhash, $i * $len / 4, $len / 4);
                #将分段的位与0x3fffffff做位与，0x3fffffff表示二进制数的30个1，即30位以后的加密串都归零
                $hex = hexdec($urlhash_piece) & 0x3fffffff; #此处需要用到hexdec()将16进制字符串转为10进制数值型，否则运算会不正常

                $short_url = "http://t.cn/";
                #生成6位短连接
                for ($j = 0; $j < 6; $j++) {
                    #将得到的值与0x0000003d,3d为61，即charset的坐标最大值
                    $short_url .= self::$charset[$hex & 0x0000003d];
                    #循环完以后将hex右移5位
                    $hex = $hex >> 5;
                }

                $short_url_list[] = $short_url;
            }

            return $short_url_list;
        }
    }

    $url = http://www.111com.net;
    $short = Short_Url::short($url);
    print_r($short);

********************************

    $short = Short_Url::short('www.baidu.com');
    var_dump($short);
    //省略链接memcache
    $memcache->set($cacheKey.$short[0],“原始地址”);