判断文件上传是否成功

is_file_upload_succ.php

if (!empty($_FILES)) {
	switch ($_FILES['voice']['error']) {
		case UPLOAD_ERR_OK: //上传成功
			if (!in_array(Tool_PublicPlatform::get_file_type($_FILES['voice']['tmp_name']), self::$_audioType)) {
				$res = Comm_I18n::text('ajax.publicplatform.illegal_file_type');
			} elseif ($_FILES['voice']['size'] > self::MAX_AUDIO_FILE_SIZE) {
				$res = Comm_I18n::text('ajax.publicplatform.more_than_max') . '1M...';
			} elseif ($_FILES['voice']['size'] == 0) {
				$res = Comm_I18n::text('ajax.publicplatform.file_size_0M');
			} else {
				$res = true;
			}
			break;
		case UPLOAD_ERR_NO_FILE: //未上传文件
			$res = Comm_I18n::text('ajax.publicplatform.no_file');
			break;
		case UPLOAD_ERR_INI_SIZE: //文件大小超过 php.ini 中 upload_max_filesize 选项限定的值
		case UPLOAD_ERR_FORM_SIZE: //文件大小超过 HTML 表单中 MAX_FILE_SIZE 选项限定的值
			$res = Comm_I18n::text('ajax.publicplatform.more_than_max') . ini_get('upload_max_filesize');
			break;
		case UPLOAD_ERR_PARTIAL: //文件只有部分被上传
		case UPLOAD_ERR_NO_TMP_DIR: //找不到临时文件夹
		case UPLOAD_ERR_CANT_WRITE: //文件写入失败，PHP 5.1.0+
			$res = Comm_I18n::text('ajax.riamsg.global.sysbusy');
			break;
		default :
			$res = Comm_I18n::text('ajax.riamsg.global.sysbusy');
			break;
	}
}