file_exists function in PHP, phpfileexists_php tutorial

Source: Internet
Author: User

PHP file_exists function Use in detail, phpfileexists


Description
BOOL File_exists (String $filename)

Returns TRUE if the file or directory specified by filename is present, otherwise FALSE.

On Windows, use the//Computer name/share/file name or computer name to share the file name to check for network shared files.

In Windows, you use//computername/share/filename or \\computername\share\filename to check for shared files on your network.

Instance One

<?php$filename = '/jb51.net/aa/to/foo.txt ', if (file_exists ($filename)) {echo "file $filename exists";} else {echo "file $ FileName does not exist ";}?" >

The output is:
File/jb51.net/aa/to/foo.txt already exists

Example Two

<?phpecho file_exists ("Jb51.net.txt");? >

Use file_exists directly to return ture or false.

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http://www.bkjia.com/PHPjc/996225.html www.bkjia.com true http://www.bkjia.com/PHPjc/996225.html techarticle The file_exists function in PHP is explained in detail, phpfileexists description: bool File_exists (string $filename) returns TRUE if the file or directory specified by filename is present, otherwise returns F. .

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