file_exists — Determines whether a file exists.
TRUE if the file exists; FALSE on error
Checks for the existence of a file. It's a good idea to
use this function before other filesystem functions to
ensure that the file you need actually exists. Note: The
results of this function are cached. See clearstatcache() for details.
Example 320. Test whether a
echo ("File not found");
PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing
(Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch).
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