What are common issues with PHP file uploads on web servers and how can they be resolved?
Issue: One common issue with PHP file uploads on web servers is the default file size limit set in the php.ini configuration file. This can prevent users from uploading larger files. To resolve this, you can increase the `upload_max_filesize` and `post_max_size` directives in the php.ini file to allow for larger file uploads.
// Increase file size limit in php.ini
ini_set('upload_max_filesize', '20M');
ini_set('post_max_size', '25M');