Awesome Support strong password check

strong-pws-check.php

<?php
// this action get fire during registration process.
add_action('wpas_pre_register_account','wpas_pre_register_account_callback', 10, 3);
function wpas_pre_register_account_callback( $user, $redirect_to, $data ){
	if( !is_pwd_strong( $user['pwd'] ) ){
		wpas_add_error( 'accept_terms_conditions', esc_html__( 'Add strong password', 'awesome-support' ) );
		wp_safe_redirect( $redirect_to );
		exit;
	}
}

/**
 * Function to check if password is strong.
 * 
 * @param string $pwd password 
 */ 
function is_pwd_strong( $pwd ){
	$is_strong = true;
  // add security checks based on your need
	if (strlen($pwd) < 8) {
        $is_strong = false;
    }
    return $is_strong;
}