File in PHP

This article is to explain the PHP in the judge file or whether the directory exists file_exists function, with a few classic examples, the need for small partners can refer to.

Description

BOOL File_exists (String $filename)

Returns TRUE if the file or directory specified by filename is present, otherwise it returns 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, use//computername/share/filename or computernamesharefilename to check for shared files on your network.

Instance One

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<?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 results are:

File/jb51.net/aa/to/foo.txt already exists

Example Two

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

Returns ture or false directly with file_exists.

The above mentioned is the entire content of this article, I hope you can enjoy.

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