FileValidator

FileValidator

use Fynix\Rule;

$validator = Rule::file('attachment')
    ->maxFileSizeMB(10)
    ->extensions(['pdf', 'docx']);

$error = $validator->validateField($_FILES['attachment'] ?? null);

Fynix checks the upload structure, upload error, readable temporary path, file size, and optional extension allow-list. The default size limit is 10 MB.