PHP file_exists() Function: Description, Parameters, Return Value, and Usage Examples
The article explains PHP's file_exists() function, detailing its syntax, parameter requirements, return values, safe‑mode warning, and provides two practical code examples demonstrating how to check for the existence of files or directories.
Function Overview The file_exists() function checks whether a specified file or directory exists and returns TRUE if it does, otherwise FALSE .
Signature bool file_exists(string $filename)
Parameter $filename – the path to the file or directory. For Windows network shares use //computername/share/filename or \\computername\share\filename .
Return Value Returns TRUE when the file or directory exists; returns FALSE otherwise.
Warning If safe mode restricts access to the file, the function will return FALSE . In such cases, include can be used if the file resides in the directory specified by safe_mode_include_dir .
Example 1 – Conditional Check
Example 2 – Direct Call
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