PHP没有在代码的javascript部分处理？ [关闭]

I have the following code in home_view.php:

    <script type="text/javascript">
        $(document).ready(function() {
            function updateContent(path, args) {
                $.post(path+args, function( data ) {
                    $( "#content" ).html( data );
                });
            }

            updateContent(<?php echo base_url("/show_cards/load_page")."/"; ?>, <?php echo $set; ?>);
        });

    </script>

PHP isn't working here:

updateContent(<?php echo base_url("/show_cards/load_page")."/"; ?>, <?php echo $set; ?>);

All PHP in the file is being processed minus the part in the javascript section. Why is this?

YOu have to enclose the URL with single quotes

updateContent('<?php echo base_url("/show_cards/load_page")."/"; ?>', '<?php echo $set; ?>');