What potential issues can arise when trying to upload files larger than the upload_max_filesize limit in PHP?

When trying to upload files larger than the upload_max_filesize limit in PHP, the file upload will fail and an error message will be displayed. To solve this issue, you can increase the upload_max_filesize limit in the php.ini file or use the ini_set() function in your PHP script to temporarily increase the limit.

// Increase upload_max_filesize limit temporarily in PHP script
ini_set('upload_max_filesize', '10M');