majiameng / uploads

src/Helper/FileFunction.php

<?php
// +----------------------------------------------------------------------
// | date: 2016-11-13
// +----------------------------------------------------------------------
// | UtilityLibrary.php: 工具库
// +----------------------------------------------------------------------
// | Author: yangyifan <666@majiameng.com>
// +----------------------------------------------------------------------
namespace tinymeng\uploads\Helper;
class FileFunction
{
    /**
     * 获得文件mime_type
     *
     * @param $file
     * @return bool|mixed
     * @author yangyifan <666@majiameng.com>
     */
    public static function getFileMimeType($file)
    {
        $finfo = finfo_open(FILEINFO_MIME_TYPE);
        if ($finfo) {

$finfo is of type resource, thus it always evaluated to false.

            $mime_type = finfo_file($finfo, $file);
            finfo_close($finfo);
            return $mime_type;
        }
        return false;
    }
    /**
     * 获得一个临时文件
     *
     * @return string
     * @author yangyifan <666@majiameng.com>
     */
    public static function getTmpFile()
    {
        $tmpfname       = tempnam("/tmp", "dir");
        chmod($tmpfname, 0777);
        return $tmpfname;
    }
    /**
     * 删除一个临时文件
     *
     * @param $file_name
     * @return bool
     * @author yangyifan <666@majiameng.com>
     */
    public static function deleteTmpFile($file_name)
    {
        return unlink($file_name);
    }
}