yuanchengpasc/application/common/library/UUIDs.php

<?php

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namespace app\common\library;


class UUIDs {
    
    
    
    /**
     * 生成一个UUID
     * @return type
     */
    public static function uuid(){
        $str = md5(uniqid(mt_rand(), true));   
        $uuid  = substr($str,0,8) ;   
        $uuid .= substr($str,8,4) ;   
        $uuid .= substr($str,12,4) ;   
        $uuid .= substr($str,16,4) ;   
        $uuid .= substr($str,20,12);   
        return $uuid;
    }
    
    /**
     * 生成一个16位UUID
     * @return type
     */
    public static function uuid16(){
        return substr(md5(uniqid(rand(),1)),   8,   16);;
    }
    
    
    
    
}