Create a dynamic variable from Advanced Custom Fields options page for SEOPress metadata

dynamic-variables-acf-options-page-for-seopress.php

function sp_titles_template_variables_array($array) {
    $array[] = '%%_acf_options_my_field_name%%';
    $array[] = '%%_acf_options_my_field_name_2%%';
    
    return $array;
}
add_filter('seopress_titles_template_variables_array', 'sp_titles_template_variables_array');

function sp_titles_template_replace_array($array) {
    $array[] = esc_attr(wp_strip_all_tags(get_field('my_field_name', 'option')));
    $array[] = esc_attr(wp_strip_all_tags(get_field('my_field_name_2', 'option')));
    
    return $array;
}
add_filter('seopress_titles_template_replace_array', 'sp_titles_template_replace_array');

function sp_get_dynamic_variables($array){
    $array['%%_acf_options_my_field_name%%'] = __('My field name from ACF options page', 'my-text-domain');
    $array['%%_acf_options_my_field_name_2%%'] = __('My field name 2 from ACF options page', 'my-text-domain');
    
    return $array;
}
add_filter('seopress_get_dynamic_variables', 'sp_get_dynamic_variables');