public static function guid($mix = '', $len = 32)
{
if (is_object($mix) && function_exists('spl_object_hash')) {
return spl_object_hash($mix);
} elseif (is_resource($mix)) {
$mix = get_resource_type($mix) . strval($mix);
} else {
$mix = empty($mix) ? rand::string(32) : $mix;
$mix = serialize($mix);
}
return md5($mix);
}
/**
* 上传文件
*
* @param string $name FILE字段名称
* @param string $path 上传的路径
* @param string $ext 扩展名
* @param boolean $rename 是否重新命名
* @return array
*/
public static function upload($name, $path, $ext, $rename = true)
{
if (!dir::exists(dirname($path))) {
dir::create(dirname($path));
}
$ext = explode(',', $ext);
$files = $_FILES[$name];
$attachments = array();
//转换数组
if (is_array($files['name'])) {
foreach ($files as $key => $var) {
foreach ($var as $id => $val) {
$attachments[$id][$key] = $val;
}
}
} else {
$attachments[] = $files;
}
//上传
$return = array();
foreach ($attachments as $k => $file) {
if (in_array(self::ext($file['name']), $ext)) {
$tmp = $path;
if ($rename) {
$tmp .= DS . rand::string(10) . self::ext($file['name']);
} else {
$tmp .= DS . $file['name'];
}
@move_uploaded_file($file['name'], $tmp);
$return[] = $tmp;
@unlink($file['tmp_name']);
} else {
$return[] = false;
}
}
return $return;
}
