PHP ��U
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# is_file

(PHP 3, PHP 4, PHP 5)

is_file -- Tells whether the filename is a regular file

## Description

bool is_file ( string filename )

Returns `TRUE` if the filename exists and is a regular file.

範例 1. is_file() example
`<?php var_dump(is_file('a_file.txt')) . "\n"; var_dump(is_file('/usr/bin/')) . "\n"; ?>`
The above example will output:
    bool(true)
    bool(false)

> 注: ��ƪ�G�|�Q�֨�C�ԲӸ�T�аѦ� clearstatcache()�C

> 提示: As of PHP 5.0.0 this function can also be used with some URL wrappers. Refer to 附錄 M for a listing of which wrappers support stat() family of functionality.

See also is_dir() and is_link().

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