下载的.phtml文件是什么？怎样打开它？急！
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PHTML PHTML（有时也被称为PHP页）实际上是网页，它包括了由PHP脚本语言写成的网页，
PHP语言和 JavaScript 或VBScript。
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'.phtml' is simply a file extension which indicates to a
webserver that the page contains PHP code which should be executed
before being sent to the browser. For almost all standard setups, it
should make no difference whether you use '.php' or '.phtml'- the way
the language works is identical. The '.phtml' extension dates back to
version 2.0 of PHP, and I think '.php' is now regarded as the preferred
standard extension to use for PHP files.
Anyway, how a file gets handled depends on the server. For example you
could make a Pearl interpreter being the handler for '.phtml' by
changing the webserver's settings. Ask you provider to find out the
proper extension for your purpose.