Method: update_form_field()

code.php

<?php

$form_id = 7;
$field_id = 'email-2';

$data = array(
		'id' => 'email-2',
		'element_id' => 'email-2',
		'form_id' => 'wrapper-1311247712118-1194',
		'condition_action' => 'show',
		'condition_rule' => 'any',
		'conditions' => Array
			(
			),
	
		'type' => 'email',
		'options' => Array
			(
			),
	
		'cols' => '12',
		'validation' => '',
		'placeholder' => 'E.g. [email protected]',
		'field_label' => 'Secondary Email Address',
		'description' => '',
		'validation_text' => '',
		'custom-class' => ''
	);
	
	$fields = Forminator_API::update_form_field( $form_id, $field_id, $data );