<?php
/**
 * Check if the current user has a specific CRM tag based on an ACF dropdown field value.
 *
 * @param bool   $can_access Whether the user can access the content.
 * @param int    $user_id    The ID of the user.
 * @param int    $post_id    The ID of the content.
 *
 * @return bool Whether the user can access the content.
 */
function my_custom_wpf_user_can_access( $can_access, $user_id, $post_id ) {
    // Get the value of the ACF dropdown field
    $field_value = get_field( 'my_field_name', $post_id );

    // Define the CRM tags for each field value
    $crm_tags = array(
        'A' => 'tag_for_A',
        'B' => 'tag_for_B',
        'C' => 'tag_for_C',
    );

    // Check if the field value matches one of the predefined values
    if ( array_key_exists( $field_value, $crm_tags ) ) {
        // Get the tag for the current field value
        $required_tag = $crm_tags[ $field_value ];

        // Check if the user has the required tag
        if ( wpf_has_tag( $required_tag, $user_id ) ) {
            return true;
        } else {
            return false;
        }
    }

    return $can_access;
}

add_filter( 'wpf_user_can_access', 'my_custom_wpf_user_can_access', 10, 3 );