Online PHP editor | refs for dfYaI

<?php $config['base_validation_rules']['account_email'] = [ 'field' => 'account_email', 'label' => 'Account Email Address', 'rules' => [ 'trim', 'valid_email', 'check_burner_email', 'check_ban', 'check_ip_address' ]]; print_r ( array_replace_recursive( $config['base_validation_rules']['account_email'], ['rules'=>['required'], 'label'=>'test'], $config['base_validation_rules']['account_email'])); print_r ( array_merge_recursive(['rules'=>['required'], 'label'=>'test'], $config['base_validation_rules']['account_email']));