xyzshop/upfile_ex.php

<?php

define('BASE_ROOT_PATH',str_replace('\\','/',dirname(__FILE__)));

function upfile_joutput_data($datas)
{
	$data = array();

	$data['code'] = 200;
	$data['message'] = 'SUCCESS';
	$data['datas'] = $datas;

	ob_clean();
	echo(json_encode($data));
}

function upfile_joutput_error()
{
	$data = array();
	$data['code'] = 15000;
	$data['message'] = "上传文件失败.";
	$data['datas'] = null;

    ob_clean();
	echo(json_encode($data));
}

function create_uuid($prefix = "") {
	$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 $prefix . $uuid; 
}

if ($_POST)
{
	$base_path = BASE_ROOT_PATH . '/data/upload/uploadtmp';
	$ret = array();
	
	if ($_FILES["file"]["error"] > 0) {
		upfile_joutput_error();	
	}
	else
	{
		$fn = $_FILES["file"]["name"];
  		$ext_name = '.' . strtolower(pathinfo($fn)['extension']);
  		$dest_file = $base_path . '/' . date("YmdHis") . '-' . create_uuid() . $ext_name;
  		$result = move_uploaded_file($_FILES["file"]["tmp_name"],$dest_file);
  		if ($result) {
  			$ret['file_path'] = str_replace($base_path, '', $dest_file);
  			$ret['src_name'] = basename($dest_file);
  			upfile_joutput_data($ret);
  		} else {
  			upfile_joutput_error();
  		}
	}
}