这个插件的代码实际上非常简单。init函数循环遍历所有侧栏（存储在wp\\u选项表中），并在wordpress中注册它们：

<?php
function init(){
        //go through each sidebar and register it
        $sidebars = sidebar_generator::get_sidebars();


        if(is_array($sidebars)){
            foreach($sidebars as $sidebar){
                $sidebar_class = sidebar_generator::name_to_class($sidebar);
                register_sidebar(array(
                    \'name\'=>$sidebar,
                    \'before_widget\' => \'<li id="%1$s" class="widget sbg_widget \'.$sidebar_class.\' %2$s">\',
                    \'after_widget\' => \'</li>\',
                    \'before_title\' => \'<h2 class="widgettitle sbg_title">\',
                    \'after_title\' => \'</h2>\',
                ));
            }
        }
    }
?>

侧栏分别使用add\\u sidebar（）和remove\\u sidebar（）方法添加/删除。$\\u POST[\'sidebar\\u name\']作为边栏名称存储在$name变量中：

<?php
function add_sidebar(){
        $sidebars = sidebar_generator::get_sidebars();
        $name = str_replace(array("\\n","\\r","\\t"),\'\',$_POST[\'sidebar_name\']);
        $id = sidebar_generator::name_to_class($name);
        if(isset($sidebars[$id])){
            die("alert(\'Sidebar already exists, please use a different name.\')");
        }

        $sidebars[$id] = $name;
        sidebar_generator::update_sidebars($sidebars);

        $js = "
            var tbl = document.getElementById(\'sbg_table\');
            var lastRow = tbl.rows.length;
            // if there\'s no header row in the table, then iteration = lastRow + 1
            var iteration = lastRow;
            var row = tbl.insertRow(lastRow);

            // left cell
            var cellLeft = row.insertCell(0);
            var textNode = document.createTextNode(\'$name\');
            cellLeft.appendChild(textNode);

            //middle cell
            var cellLeft = row.insertCell(1);
            var textNode = document.createTextNode(\'$id\');
            cellLeft.appendChild(textNode);

            //var cellLeft = row.insertCell(2);
            //var textNode = document.createTextNode(\'[<a href=\\\'javascript:void(0);\\\' onclick=\\\'return remove_sidebar_link($name);\\\'>Remove</a>]\');
            //cellLeft.appendChild(textNode)

            var cellLeft = row.insertCell(2);
            removeLink = document.createElement(\'a\');
            linkText = document.createTextNode(\'remove\');
            removeLink.setAttribute(\'onclick\', \'remove_sidebar_link(\\\'$name\\\')\');
            removeLink.setAttribute(\'href\', \'javacript:void(0)\');

            removeLink.appendChild(linkText);
            cellLeft.appendChild(removeLink);


        ";


        die( "$js");
    }

    function remove_sidebar(){
        $sidebars = sidebar_generator::get_sidebars();
        $name = str_replace(array("\\n","\\r","\\t"),\'\',$_POST[\'sidebar_name\']);
        $id = sidebar_generator::name_to_class($name);
        if(!isset($sidebars[$id])){
            die("alert(\'Sidebar does not exist.\')");
        }
        $row_number = $_POST[\'row_number\'];
        unset($sidebars[$id]);
        sidebar_generator::update_sidebars($sidebars);
        $js = "
            var tbl = document.getElementById(\'sbg_table\');
            tbl.deleteRow($row_number)

        ";
        die($js);
    }
?>

使用get\\u侧栏方法将侧栏加载并注册到主题中

<?php
function get_sidebar($name="0"){
        if(!is_singular()){
            if($name != "0"){
                dynamic_sidebar($name);
            }else{
                dynamic_sidebar();
            }
            return;//dont do anything
        }
        global $wp_query;
        $post = $wp_query->get_queried_object();
        $selected_sidebar = get_post_meta($post->ID, \'sbg_selected_sidebar\', true);
        $selected_sidebar_replacement = get_post_meta($post->ID, \'sbg_selected_sidebar_replacement\', true);
        $did_sidebar = false;
        //this page uses a generated sidebar
        if($selected_sidebar != \'\' && $selected_sidebar != "0"){
            echo "\\n\\n<!-- begin generated sidebar -->\\n";
            if(is_array($selected_sidebar) && !empty($selected_sidebar)){
                for($i=0;$i<sizeof($selected_sidebar);$i++){                    

                    if($name == "0" && $selected_sidebar[$i] == "0" &&  $selected_sidebar_replacement[$i] == "0"){
                        //echo "\\n\\n<!-- [called $name selected {$selected_sidebar[$i]} replacement {$selected_sidebar_replacement[$i]}] -->";
                        dynamic_sidebar();//default behavior
                        $did_sidebar = true;
                        break;
                    }elseif($name == "0" && $selected_sidebar[$i] == "0"){
                        //we are replacing the default sidebar with something
                        //echo "\\n\\n<!-- [called $name selected {$selected_sidebar[$i]} replacement {$selected_sidebar_replacement[$i]}] -->";
                        dynamic_sidebar($selected_sidebar_replacement[$i]);//default behavior
                        $did_sidebar = true;
                        break;
                    }elseif($selected_sidebar[$i] == $name){
                        //we are replacing this $name
                        //echo "\\n\\n<!-- [called $name selected {$selected_sidebar[$i]} replacement {$selected_sidebar_replacement[$i]}] -->";
                        $did_sidebar = true;
                        dynamic_sidebar($selected_sidebar_replacement[$i]);//default behavior
                        break;
                    }
                    //echo "<!-- called=$name selected={$selected_sidebar[$i]} replacement={$selected_sidebar_replacement[$i]} -->\\n";
                }
            }
            if($did_sidebar == true){
                echo "\\n<!-- end generated sidebar -->\\n\\n";
                return;
            }
            //go through without finding any replacements, lets just send them what they asked for
            if($name != "0"){
                dynamic_sidebar($name);
            }else{
                dynamic_sidebar();
            }
            echo "\\n<!-- end generated sidebar -->\\n\\n";
            return;         
        }else{
            if($name != "0"){
                dynamic_sidebar($name);
            }else{
                dynamic_sidebar();
            }
        }
    }
?>

实际上，我们从wp\\u options表中加载边栏数组，其中包含以下内容：

<?php
function get_sidebars(){
        $sidebars = get_option(\'sbg_sidebars\');
        return $sidebars;
    }
?>

一旦您了解了PHP，这段代码就非常简单了，所以我建议您花点时间熟悉一下它？这真是一项伟大的技能。希望这能帮助你找到正确的方向。