Issue with realpath() function on Mac OS X XAMPP server falsely returning false for existing files

Currently, there seems to be an issue with a script that is unable to locate a directory on my OS X machine. This particular directory was copied from an external hard drive onto the desktop, which I suspect might be causing the problem.

    $path = '/Users/username/Desktop/testfolder';
    $path = realpath($path);

The code snippet above isn't functioning as expected.

    $path = '/Users/username/Desktop';
    $path = realpath($path);

On the other hand, the code snippet above works perfectly fine.

To provide some context, I am using Mac OS X Lion 10.7 and have XAMPP installed. The specific setup involves a kiosk iMac communicating with an iPad on the same network, hence the need for running Apache on OS X. The goal is for the iPad to retrieve images from the iMac through PHP acting as a proxy. However, the error arises when setting up the image path in the backend by the administrator.

At this point, it's unclear what exactly is causing the issue. My assumption is that there may be conflicts related to permissions and ownership of files originating from the external hard drive. While using "chown" or "chmod" commands in Terminal could potentially fix this, I prefer finding a solution within the PHP script itself. Any suggestions or insights would be greatly appreciated! :-)

Answer №1

Encountering a rather peculiar problem, I discovered that even though the following code snippet functions as expected:

$dirPath = '/Users/username/Desktop';
$dirPath = realpath($dirPath);

The directory named "Desktop" had incorrect permissions set. Rectifying the permissions for Desktop enabled me to successfully navigate through the path specified below:

$dirPath = '/Users/username/Desktop/testfolder';
$dirPath = realpath($dirPath);

According to the documentation, it mentions

The running script must have executable permissions on all directories in the hierarchy, otherwise realpath() will return FALSE.
, which indeed turned out to be the root cause of the issue.

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