插入多张图片地址到数据库

这是官方的上传图片的代码，请问我怎么循环出多张图片的上传地址啊

<?php

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
echo "success";

$ret=array('strings'=>$_POST,'error'=>'0');  

$fs=array();  

foreach ( $_FILES as $name=>$file ) {  

    $fn=$file['name'];  
    $ft=strrpos($fn,'.',0);  
    $fm=substr($fn,0,$ft);  
    $fe=substr($fn,$ft);  
    $fp='files/'.$fn;  
    $fi=1;  
    while( file_exists($fp) ) {  
        $fn=$fm.'['.$fi.']'.$fe;  
        $fp='files/'.$fn;  
        $fi  ;  
    }  

    move_uploaded_file($file['tmp_name'],$fp);  
    //$q=$fp[0];  
    //$w=$fp[1];  
    //$e=$fp[2];  

    $fs[$name]=array('name'=>$fn,'url'=>$fp,'type'=>$file['type'],'size'=>$file['size']);  
}  
$sql="INSERT INTO `weishichang`.`goods` `picture`,`picture2`,`picture3`) VALUES ('$easyinfo', '','','')";  
$query=mysqli_query($conn, $sql);  

$ret['files']=$fs;  
//echo json_encode($fp);  
echo  $fp;  
echo json_encode($ret);  

}else{
echo "{'error':'Unsupport GET request!'}";
}

?>