PHP FileInfo open() 函数

finto_open() 函数可以创建一个新的 fileinfo 资源。

语法

resource finfo_open ([ int options [, stringarg ]] )

Object oriented style (constructor):
finfo
__construct ([ int options [, stringmagic_file ]] )

此函数可以打开一个魔术数据库，并在成功时返回其资源和魔术数据库资源，失败时返回false。

示例-面向对象风格

<?php
   finfo = new finfo(FILEINFO_MIME, "/usr/share/misc/magic");    // return mime type ala mimetype extension

   if(!finfo) {
      echo "Opening fileinfo database failed";
      exit();
   }
   /* get mime-type for a specific file */
   filename = "/usr/local/something.txt";
   echofinfo->file(filename);

   /* close connection */finfo->close();
?>

实例 – 过程化样式

<?php
   finfo = finfo_open(FILEINFO_MIME, "/usr/share/misc/magic");    // return mime type ala mimetype extension

   if(!finfo) {
      echo "Opening fileinfo database failed";
      exit();
   }

   /* get mime-type for a specific file */
   filename = "/usr/local/something.txt";
   echo finfo_file(finfo, filename);

   /* close connection */
   finfo_close(finfo);
?>