php生成短网址示例

2015-01-24信息快讯网

这篇文章主要介绍了php生成短网址示例,需要的朋友可以参考下

php生成短网址

<?php  
$chars=array("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","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");
$salt="www.joneto.com";
$hash=md5("http://www.sina.com".$salt);
$rs=array();
for($i=0;$i<4;$i++){
 $temp=substr($hash, $i*8,8);
 $temp=base_convert($temp, 16, 10) & base_convert("3fffffff", 16, 10);

$str=""; for($j=0;$j<6;$j++){ $subtemp=$temp & intval(base_convert("3d", 16, 10)); $str.=$chars[$subtemp]; $temp=$temp>>5; } unset($temp); $rs[]=$str; } print_r($rs); ?>

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