How to increase the maximum upload file size in PHP?

Hi everyone! I'm new to PHP and ran into a problem when uploading files to the server. The site has a form for uploading images, but when I try to upload a file larger than 2 MB, it just doesn't send. No error is displayed, the page just reloads, and the file doesn't appear in the uploads folder.\n\nHere's my form code:\n\n```php\n

\n \n \n

\n```\n\nAnd the upload.php handler:\n\n```php\n