file_exists
(PHP 3, PHP 4, PHP 5)
file_exists -- Checks whether a file or directory exists
Description
bool
file_exists ( string filename )
Checks whether a file or directory exists.
Parameters
filename
Path to the file or directory.
On windows, use //computername/share/filename or
\\computername\share\filename to check files on
network shares.
Return Values
Returns TRUE if the file or directory specified by
filename exists; FALSE otherwise.
Note:
The check is done using the real UID/GID instead of the effective one.
Examples
Example 1. Testing whether a file exists
<?php
$filename = '/path/to/foo.txt';
if (file_exists($filename)) {
echo "The file $filename exists";
} else {
echo "The file $filename does not exist";
}
?>
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Notes
Note: The results of this
function are cached. See clearstatcache() for
more details.
Tip: As of PHP 5.0.0 this function
can also be used with some URL wrappers. Refer to
Appendix O for a listing of which wrappers support
stat() family of functionality.
