PHP file_exists function using _php tutorial

file_exists Functions in PHP

This article is to explain the PHP in the judgment file or directory is the existence of the file_exists function, with a few classic examples, the need for small partners to refer to.

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

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$filename = '/jb51.net/aa/to/foo.txt '; if (file_exists ($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

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Echo file_exists ("Jb51.net.txt"); ?>

Use file_exists directly to return ture or false.

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