add_inline_vars_wp.php

<?php

function addInlineVars($vars, $table_id) {
    if(function_exists('wp_add_inline_script')) {
      wp_add_inline_script( 'script_handle', 'window.ninja_footables.tables["table_'.$table_id.'"] = '.$vars.';');
    } else {
        add_action('wp_footer', function () use ($vars, $table_id) {
            ?>
                <script type="text/javascript">
                    window.ninja_footables.tables["table_<?php echo $table_id;?>"] = <?php echo $vars ?>;
                </script>
            <?php
        }, 100);
    }
}