function WPSR_get_post_redirection($post_id)
{
    global $wpdb, $util, $table_prefix;
    $table_name = $table_prefix . 'WP_SEO_Redirection';
    // Autosave
    if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
        return;
    }
    // AJAX
    if (defined('DOING_AJAX') && DOING_AJAX) {
        return;
    }
    // Post revision
    if (false !== wp_is_post_revision($post_id)) {
        return;
    }
    $redirect_from = $util->post('wp_seo_redirection_url_from');
    $redirect_to = $util->post('wp_seo_redirection_url');
    if ($redirect_to != '') {
        $wpdb->get_results("select ID from {$table_name} where postID='{$post_id}'  ");
        if ($wpdb->num_rows > 0) {
            $sql = "update {$table_name} set redirect_to='{$redirect_to}',redirect_from='{$redirect_from}',redirect_type='301',url_type=2 where postID='{$post_id}'";
            $wpdb->query($sql);
        } else {
            $wpdb->query("delete from {$table_name} where redirect_from='{$redirect_from}'");
            $sql = "insert into {$table_name}(redirect_from,redirect_to,redirect_type,url_type,postID) values ('{$redirect_from}','{$redirect_to}','301',2,'{$post_id}') ";
            $wpdb->query($sql);
        }
    } else {
        $wpdb->query("delete from {$table_name} where postID='{$post_id}'");
    }
    $SR_redirect_cache = new clogica_SR_redirect_cache();
    $SR_redirect_cache->free_cache();
}
<?php

global $wpdb, $table_prefix, $util;
$table_name = $table_prefix . 'WP_SEO_Redirection';
if ($util->get('del') != '') {
    $delid = intval($util->get('del'));
    $wpdb->query(" delete from {$table_name} where ID='{$delid}' ");
    if ($util->there_is_cache() != '') {
        $util->info_option_msg("You have a cache plugin installed <b>'" . $util->there_is_cache() . "'</b>, you have to clear cache after any changes to get the changes reflected immediately! ");
    }
    $SR_redirect_cache = new clogica_SR_redirect_cache();
    $SR_redirect_cache->free_cache();
}
$rlink = $util->get_current_parameters(array('del', 'search', 'page_num', 'add', 'edit'));
?>
<br/>

<script type="text/javascript">

//---------------------------------------------------------

function go_search(){
var sword = document.getElementById('search').value;
	if(sword!=''){
		window.location = "<?php 
echo $rlink;
?>
&search=" + sword ;
	}else
	{
		alert('Please input any search words!');