Advanced Custom Fields ACF Password field and MD5 Hashing

ACF is great, but there can be some security concerns. Primary among them from front-end posting, is Passwords. If you ever find yourself using the “PASSWORD” ACF field type, make sure you hash it so you’re not storing the password as plain text!

It’s dead simple, drop this bit into functions.php

/* http://biostall.com/hashing-acf-password-type-fields-in-wordpress/ */
function ns_function_encrypt_passwords( $value, $post_id, $field  )
{
    $value = wp_hash_password( $value );
 
    return $value;
}
add_filter('acf/update_value/type=password', 'ns_function_encrypt_passwords', 10, 3);