Add reCAPTCHA to WooCommerce Signup Form

reCAPTCHA_Wooc.php

<?php

/* wooc_reCAPTCHA */
// Add reCAPTCHA to WooCommerce Signup Form
function wooc_reCAPTCHA(){
	?>

	<script src='https://www.google.com/recaptcha/api.js' defer'></script>
	<label>ARE YOU HUMAN?</label>
	<div class="g-recaptcha" data-sitekey="[reCAPTCHA Site Key]"></div>

	<?php
}
add_action( 'woocommerce_register_form', 'wooc_reCAPTCHA', 19);

// Validate reCAPTCHA input before creating account
function wooc_validate_re_captcha_field( $username, $email, $wpErrors ){
	$remoteIP = $_SERVER['REMOTE_ADDR'];
	$recaptchaResponse = $_POST['g-recaptcha-response'];

	$response = wp_remote_post( 'https://www.google.com/recaptcha/api/siteverify', [
		'body' => [
			'secret'   => '[reCAPTCHA Secret Key]',
			'response' => $recaptchaResponse,
			'remoteip' => $remoteIP
		]
	] );

	$response_code = wp_remote_retrieve_response_code( $response );
	$response_body = wp_remote_retrieve_body( $response );

	if ( $response_code == 200 ){
		$result = json_decode( $response_body, true );

		if ( ! $result['success'] ){
			switch ( $result['error-codes'] ){
				case 'missing-input-secret':
				case 'invalid-input-secret':
					$wpErrors->add( 'recaptcha', __( 'Invalid reCAPTCHA secret key.', 'woocommerce' ) );
					break;

				case 'missing-input-response' :
				case 'invalid-input-response' :
					$wpErrors->add( 'recaptcha', __( 'Please check the box to prove that you are not a robot.', 'woocommerce' ) );
					break;

				default:
					$wpErrors->add( 'recaptcha', __( 'Something went wrong validating the reCAPTCHA.', 'woocommerce' ) );
					break;
			}
		}
	}
	else {
		$wpErrors->add( 'recaptcha_error', __( 'Unable to reach the reCAPTCHA server.', 'woocommerce' ) );
	}
}
add_action( 'woocommerce_register_post', 'wooc_validate_re_captcha_field', 9, 3 );