PHP is_dir() Function: Determine if a Path is a Directory
This article explains the PHP is_dir() function, describing its purpose to check whether a given filename refers to an existing directory, detailing its parameter, return values, and providing example code snippets demonstrating true and false outcomes for various path inputs.
The is_dir() function in PHP returns a boolean indicating whether the supplied filename corresponds to an existing directory.
Signature: bool is_dir(string $filename)
Description: It checks the given path; if the filename exists and is a directory, it returns TRUE , otherwise FALSE . Relative paths are resolved against the current working directory.
Parameter: $filename – the path to test; can be absolute or relative.
Return value: TRUE if the path is a directory, FALSE otherwise.
Example:
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