fatal error: Parse error: syntax error, unexpected

This is the wordpress plugin that was runing fine on old PHP version but now on PHP5.4.X producing the following error.

Plugin could not be activated because it triggered a fatal error.

Parse error: syntax error, unexpected $end in C:\wamp\www\testweb\wp-content\plugins\bxslider\slider.php on line 175

HERE is the SLIDER.PHP File.

<?php
error_reporting(1);
if(!defined('ABSPATH')) {
    die("Don't call this file directly.");
}
if (!defined('WP_CONTENT_URL')) {
    define('WP_CONTENT_URL', get_option('siteurl').'/wp-content');
}
define('CONTENT_SLIDE_URL',get_option('siteurl').'/wp-content/plugins/bxslider/');



/* Add Administrator Menu's*/
function bx_content_slide_menu()
{
    $level = 'level_10';
   add_menu_page('BX Content Slide', 'BX Content Slide', $level, __FILE__,'bx_content_slide_options',CONTENT_SLIDE_URL.'images/icon6.png');
   add_submenu_page(__FILE__, 'Help &amp; Support', 'Help &amp; Support', $level,'bx_content_slide_help','bx_content_slide_help');
}
add_action('admin_menu', 'bx_content_slide_menu');

function bx_content_slide_options()
{
    bx_settings_update();
    global $wpdb;
    $query="Select * from wp_slider";
    $slider_res=$wpdb->get_results($query);

    if($_GET['mode']=='edit'){
        $query="select * from wp_slider where id='".$_GET['id']."'";
        $cur_slider_res=$wpdb->get_results($query);


    }

    include_once dirname(__FILE__).'/options_page.php';
}


function bx_settings_update(){
    global $wpdb;
    if(isset($_POST['total_options']))
    {
        echo '<div class="updated fade" id="message"><p>Content Slide Settings <strong>Updated</strong></p></div>';


        for($i=1;$i<=($_POST['total_options']-1);$i++){
            if(!empty($_POST['wpcs_options']['slide_imagetext'.$i])){   
        $query="INSERT INTO `wp_slider` (`image`, `link`, `content`,`name`) VALUES ('".$_POST['wpcs_options']['slide_image'.$i]."', '".$_POST['wpcs_options']['slide_imagelink'.$i]."', '".$_POST['wpcs_options']['slide_imagetext'.$i]."', '".$_POST['name']."');";
        $wpdb->query($query);
            }
        }
        //update_option('bx_options', $_POST['bx_options']);
    }
    if($_GET['mode']=='delete'){
        $wpdb->query("Delete from wp_slider where id='".$_GET['id']."'");
        header("location:admin.php?page=bxslider/slider.php" );
    }
    if($_GET['mode']=='edit' && isset($_POST['id'])){

    $wpdb->query("update wp_slider set image='".$_POST['wpcs_options']['slide_image1']."', link='".$_POST['wpcs_options']['slide_imagelink1']."', content='".$_POST['wpcs_options']['slide_imagetext1'] ."',name='".$_POST['name']  ."' where id='".$_POST['id']."'");
        header("location:admin.php?page=bxslider/slider.php" ); 

    }


}


function createTable()
{
      global $wpdb;

    $qndTable = $wpdb->prefix . "slider";

    if($wpdb->get_var("show tables like '$qndTable'") != $qndTable)
    {
        $create =   "CREATE TABLE " . $qndTable . " (
                              `id` int(11) NOT NULL AUTO_INCREMENT,
                              `image` varchar(255) NOT NULL,
                              `link` varchar(255) NOT NULL,
                              `content` text NOT NULL,
                              `name` varchar(255) NOT NULL,
                              PRIMARY KEY (`id`)
                            ) ENGINE=InnoDB  DEFAULT CHARSET=latin1 AUTO_INCREMENT=1;";

        require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
        dbDelta($create);

    }
}
function deleteTable(){
     global $wpdb;
     $wpdb->query("DROP table ".$wpdb->prefix . "slider");

}

register_activation_hook(__FILE__,  'createTable');

register_deactivation_hook(__FILE__,  'deleteTable');


function bxcontent_slider( $atts ) {
    $sname=$atts[slider];
    $type=$atts[type];
    if(!$type) $type='image';
    global $wpdb;
    $query="Select * from wp_slider where name='".$sname."' ";
    $slider_res=$wpdb->get_results($query);


    addbx_head($sname);         

    if($type=='image'){
    $content .='<ul class="'.$sname.'">';   
        foreach($slider_res as $slider){
            $content .= '<li><img src="'.$slider->image.'" /></li>';
        }
    $content .='</ul>';
    }elseif($type=='content'){
    $content .='<div class="'.$sname.'">';  
        foreach($slider_res as $slider){
        $content .= '<div>'.$slider->content.'</div>';
        }
        $content .='</div>';
    }

    return $content;
    // echo  "slider = {$atts[slider]}";
}
add_shortcode('bxcontentslider', 'bxcontent_slider');
function addbx_head($sname){
?>
<script language='javascript'>
                var $jquery = jQuery.noConflict(); 
                $jquery(document).ready(function(){

                  $jquery('.<?php echo $sname ?>').bxSlider({
                      auto:true,
                      controls:false,
                       pagerCustom: '#bx-pager-<?php echo $sname?>',
                       pagerActiveClass:"active"
                      });


                });

                </script>
<?
}
function add_bxjs() {
    /*wp_enqueue_script(
        'custom-script',
        plugins_url('/bxslider/jquery.bxslider.js', __FILE__ ) ,
        array( 'jquery' )
    );*/
    wp_enqueue_style('bxstyle', plugins_url('/bxslider/jquery.bxslider.css', __FILE__ ));
    wp_enqueue_script('jquery',plugins_url('/bxslider/jquery.min.js', __FILE__ ), array('jquery'));
    wp_enqueue_script('easing',plugins_url('/bxslider/jquery.easing.1.3.js', __FILE__ ), array('jquery'));
    wp_enqueue_script('bxscript',plugins_url('/bxslider/jquery.bxslider.js', __FILE__ ), array('jquery'));
}

add_action( 'wp_enqueue_scripts', 'add_bxjs' );

The line 175 stated is have add_action( 'wp_enqueue_scripts', 'add_bxjs' );

You have issue with php default and short tags.

<? ... ?>   PHP short tag
<?php ... ?> PHP default tag

See here for more details

Please replace your last few lines with following code

<?php
}
function add_bxjs() {
    /*wp_enqueue_script(
        'custom-script',
        plugins_url('/bxslider/jquery.bxslider.js', __FILE__ ) ,
        array( 'jquery' )
    );*/
    wp_enqueue_style('bxstyle', plugins_url('/bxslider/jquery.bxslider.css', __FILE__ ));
    wp_enqueue_script('jquery',plugins_url('/bxslider/jquery.min.js', __FILE__ ), array('jquery'));
    wp_enqueue_script('easing',plugins_url('/bxslider/jquery.easing.1.3.js', __FILE__ ), array('jquery'));
    wp_enqueue_script('bxscript',plugins_url('/bxslider/jquery.bxslider.js', __FILE__ ), array('jquery'));
}

add_action( 'wp_enqueue_scripts', 'add_bxjs' );
?>