php 在DEDE程序中批量将软件大小(字符串)转换为数值

<?php
/**
 * 数据库数据转换处理
 */
require_once (dirname(__FILE__) . "/include/common.inc.php");
/**
 * 数据转换统一单位
 *
 * @param String $id 文档ID
 * @param String $count 数据库表数据
 * @author chenjianlong <939238564@qq.com>
 */
function softsizet($id,$count){
    global $dsql;
    //$count = $dsql->GetOne("SELECT `aid`,`softsize` FROM  `1sohu_addonsoft` WHERE aid=$id");
    preg_match('/(MB|KB|GB)/', $count['softsize'],$unit);
    //截取单位
    preg_match('/([0-9]+(.)?([0-9]+)?)/', $count['softsize'],$value);
    //截取数值
    if($unit[0] == 'MB'){//转换为KB单位存储 
        $size = $value[0] * 1024;
    }else if($unit[0] == 'KB'){      
        $size = $value[0];  
    }else if($unit[0] == 'GB'){      
        $size = $value[0] * 1024 * 1024;  
    }else{      
        $size = 0;  
    }  
    $size = $size * 100;  
    $msql = mysql_query("UPDATE `1sohu_addonsoft` SET `softsizet` = '$size' WHERE `1sohu_addonsoft`.`aid` =$id");  
    if($msql){echo '写入成功'.'<br />';}else{echo '写入失败'.'<br />';}}
    /**
     * 启动单位转换函数
     *
     * @author chenjianlong <939238564@qq.com>
     */
    function start(){
        global $dsql;
        //$count = $dsql->GetOne("SELECT count(*) AS count FROM `1sohu_addonsoft`");$count =  $count['count'];
        $list = array();
        $query = $dsql->Execute("","SELECT aid,softsize FROM `1sohu_addonsoft` order by aid");
        while($info = $dsql->GetArray($query)){
            $aid = $info['aid'];
            softsizet($aid, $info);
        }
        //for($i=1;$i<=$count;$i++){
            //$idsql = $dsql->GetOne("SELECT aid FROM `1sohu_addonsoft` WHERE aid='$i' GROUP BY aid ");
            //if($idsql){
                //softsizet($idsql['aid']);
                //echo $idsql['aid'].'<br />';
            /