What are common issues with file permissions when uploading files to a PHP web server?

Common issues with file permissions when uploading files to a PHP web server include the uploaded files not being readable or writable by the server, leading to errors or issues accessing the files. To solve this, you can set the correct file permissions after uploading the file using PHP's `chmod()` function.

// Set the correct file permissions after uploading
$uploadedFile = 'path/to/uploaded/file.txt';
$permissions = 0644; // Example permissions for read and write access
chmod($uploadedFile, $permissions);