通过mid值转新浪微博的地址

<?php

$mid='1234567890';
echo midToStr($mid);

function midToStr($mid) {
    settype($mid, 'string');
    $mid_length = strlen($mid);
    $url = '';
    $str = strrev($mid);
    $str = str_split($str, 7);

    foreach ($str as $v) {
        $char = intTo62(strrev($v));
        $char = str_pad($char, 4, "0");
        $url .= $char;
    }

    $url_str = strrev($url);

    return ltrim($url_str, '0');
}

function str62keys_int_62($key) //62进制字典
{
    $str62keys = array (
        "0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q",
        "r","s","t","u","v","w","x","y","z","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q",
        "R","S","T","U","V","W","X","Y","Z"
    );
    return $str62keys[$key];
}

function intTo62($int10) {
    $s62 = '';
    $r = 0;
    while ($int10 != 0) {
        $r = $int10 % 62;
        $s62 .= str62keys_int_62($r);
        $int10 = floor($int10 / 62);
    }

    return $s62;
}

转载自：http://www.haoshengzhide.com/2012/07/24/%e9%80%9a%e8%bf%87mid%e5%80%bc%e8%bd%ac%e6%96%b0%e6%b5%aa%e5%be%ae%e5%8d%9a%e7%9a%84%e5%9c%b0%e5%9d%80/