September 2001
Intermediate to advanced
768 pages
32h 45m
English
Content preview from PHP Functions Essential Reference
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file_exists
bool file_exists(string filename) Determines whether a file exists.
Returns:
TRUE if the file exists; FALSE on error
Description:
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:
Test whether a file exists
if(!file_exists("myfile"))
{
echo ("File not found");
}
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