WordPress产品导入后内容出现乱码，以及附属一些别的功能

效果图如下

该插件附带了一个可以把产品描述里面的超链接给去掉，以及有的产品图片点击会在地址栏上面显示图片的路径，在该插件可以进行关闭，并且替换成一个模态窗，还有对产品邮费展示进行了处理，到金额到达包邮的时候，别的邮费进行隐藏

下面是该插件源码
目录结构
duola
　　duola.php
　　scripts.js
　　styles.css

duola.php文件

<?php
/*
Plugin Name: 产品数据内容处理
Description: 产品标题以及描述中，如果有原本网站的数据，使用这个插件进行处理（新版本功能：增加了产品详情，给产品图片新增了一个模态窗，以及产品隐藏其他运费增加了一个快捷按钮和产品描述去超链接）
Version: 2.3.4
Author: 朵啦
*/

if (!defined('ABSPATH')) {
    exit; // 如果直接访问，退出
}

class ContentReplacer {
    public function __construct() {
        // 添加后台菜单
        add_action('admin_menu', array($this, 'add_admin_menu'));
        // 处理表单提交
        add_action('admin_post_replace_content', array($this, 'handle_form_submission'));
        // 处理回滚
        add_action('admin_post_rollback_content', array($this, 'handle_rollback'));
        // 处理免运费隐藏按钮的表单提交
        add_action('admin_post_toggle_shipping', array($this, 'handle_toggle_shipping'));
        // 处理产品模态窗按钮的表单提交
        add_action('admin_post_toggle_modal', array($this, 'handle_toggle_modal'));

        add_action('admin_post_toggle_hyperlink', array($this, 'handle_toggle_hyperlink'));
        add_action('admin_post_close_hyperlink', array($this, 'handle_close_hyperlink'));

        // 检查简码状态的AJAX处理
        add_action('wp_ajax_check_shortcode_status', array($this, 'check_shortcode_status'));
        // 添加样式和脚本
        add_action('admin_enqueue_scripts', array($this, 'enqueue_styles'));
    }

    // 添加后台菜单项
    public function add_admin_menu() {
        add_menu_page(
            '产品数据内容处理',  // 页面标题
            '产品数据内容处理',  // 菜单标题
            'manage_options', // 权限
            'content-replacer', // 菜单别名
            array($this, 'create_admin_page'), // 页面内容的回调函数
            'dashicons-admin-tools' // 图标
        );
    }

    public function enqueue_styles() {
        wp_enqueue_style('content-replacer-styles', plugins_url('styles.css', __FILE__));
        wp_enqueue_script('content-replacer-scripts', plugins_url('scripts.js', __FILE__), array('jquery'), null, true);
        wp_add_inline_style('content-replacer-styles', '
        #adminmenu .toplevel_page_content-replacer .wp-menu-image:before {
            content: "";
            display: inline-block;
            width: 20px;
            height: 20px;
            background-image: url(' . plugins_url('img/icon.png', __FILE__) . ');
            background-size: cover;
        }
    ');
    }

    // 创建后台页面
    public function create_admin_page() {
        ?>
        <div class="wrap content-replacer-container">
            <h1>产品数据内容处理</h1>
            <form method="post" action="<?php echo admin_url('admin-post.php'); ?>" id="content-replacer-form">
                <input type="hidden" name="action" value="replace_content">
                <?php wp_nonce_field('replace_content_nonce', 'replace_content_nonce_field'); ?>
                <table class="form-table">
                    <tr valign="top">
                        <th scope="row"><label for="original_text">原始内容</label></th>
                        <td><input type="text" id="original_text" name="original_text" required /></td>
                    </tr>
                    <tr valign="top">
                        <th scope="row"><label for="new_text">新内容</label></th>
                        <td><input type="text" id="new_text" name="new_text" required /></td>
                    </tr>
                </table>
                <p class="submit"><input type="submit" class="button-primary" value="替换内容" /></p>
                <div id="loading" class="loading">正在处理中，请稍候...</div>
                <div class="progress-bar" id="progress-bar">
                    <div class="progress-bar-inner" id="progress-bar-inner"></div>
                </div>
            </form>

            <h2>替换历史</h2>
            <ul>
                <?php
                $history = get_option('content_replacer_history', array());
                if (empty($history)) {
                    echo '<li>还没有进行过替换。</li>';
                } else {
                    $history_by_date = [];
                    foreach ($history as $entry) {
                        $date = date('Y-m-d H:i:s', strtotime($entry['date']));
                        if (!isset($history_by_date[$date])) {
                            $history_by_date[$date] = ['entries' => [], 'count' => 0];
                        }
                        $history_by_date[$date]['entries'][] = '"' . esc_html($entry['original_text']) . '" 替换为 "' . esc_html($entry['new_text']) . '"';
                        $history_by_date[$date]['count'] += $entry['replacements'];
                    }

                    foreach ($history_by_date as $date => $data) {
                        $entries = array_unique($data['entries']); // 去除重复项
                        echo '<li>';
                        echo '于 ' . esc_html($date) . ' 替换: ';
                        echo implode(', ', $entries);
                        echo ' 共 ' . $data['count'] . ' 处改动 ';
                        echo ' <a href="' . wp_nonce_url(admin_url('admin-post.php?action=rollback_content&date=' . urlencode($date)), 'rollback_content_nonce', 'rollback_content_nonce_field') . '">回滚</a>';
                        echo '</li>';
                    }
                }
                ?>
            </ul>
        </div>

        <div class="wrap content-replacer-container">

            <!-- 新按钮：免运费隐藏 -->
            <form method="post" action="<?php echo admin_url('admin-post.php'); ?>" id="shipping-toggle-form">
                <input type="hidden" name="action" value="toggle_shipping">
                <?php wp_nonce_field('toggle_shipping_nonce', 'toggle_shipping_nonce_field'); ?>
                <p class="submit"><input type="submit" class="button-primary" id="toggle-shipping-button" value="免运费隐藏" /></p>
            </form>

            <!-- 新按钮：产品模态窗 -->
            <form method="post" action="<?php echo admin_url('admin-post.php'); ?>" id="modal-toggle-form">
                <input type="hidden" name="action" value="toggle_modal">
                <?php wp_nonce_field('toggle_modal_nonce', 'toggle_modal_nonce_field'); ?>
                <p class="submit"><input type="submit" class="button-primary" id="toggle-modal-button" value="产品模态窗" /></p>
            </form>

            <!-- 新按钮：去产品超链接 -->
            <form method="post" action="<?php echo admin_url('admin-post.php'); ?>" id="hyperlink-toggle-form">
                <input type="hidden" name="action" value="toggle_hyperlink">
                <?php wp_nonce_field('toggle_hyperlink_nonce', 'toggle_hyperlink_nonce_field'); ?>
                <p class="submit"><input type="submit" class="button-primary" id="toggle-hyperlink-button" value="检查中..." /></p>
            </form>

            <!-- 新按钮：关闭描述去超链接功能 -->
            <form method="post" action="<?php echo admin_url('admin-post.php'); ?>" id="hyperlink-close-form" style="display:none;">
                <input type="hidden" name="action" value="close_hyperlink">
                <?php wp_nonce_field('close_hyperlink_nonce', 'close_hyperlink_nonce_field'); ?>
                <p class="submit"><input type="submit" class="button-primary" id="close-hyperlink-button" value="关闭描述去超链接功能" /></p>
            </form>

        </div>
        <script>
            jQuery(document).ready(function($) {
                $('#content-replacer-form').on('submit', function() {
                    $('#loading').hide();
                    $('#progress-bar').show();
                    var progressBar = $('#progress-bar-inner');
                    var width = 0;
                    var interval = setInterval(function() {
                        if (width >= 100) {
                            clearInterval(interval);
                            $('#progress-bar').hide();
                        } else {
                            width += 1; // 增加进度的步长
                            progressBar.css('width', width + '%');
                            progressBar.text(width + '%');
                        }
                    }, 50); // 模拟进度，逐步增加
                });

                // 隐藏其他插件提示
                $('.notice, .update-nag, .updated, .error, .is-dismissible').not('.content-replacer-container .notice').hide();

                // 检查 function.php 中是否有相关简码
                $.ajax({
                    url: ajaxurl,
                    data: {
                        'action': 'check_shortcode_status'
                    },
                    success: function(response) {
                        if (response.shipping_hidden) {
                            $('#toggle-shipping-button').val('其他运费已隐藏');
                        }
                        if (response.modal_enabled) {
                            $('#toggle-modal-button').val('产品图片模态窗已开启');
                        }
                        if (response.hyperlinks_exist) {
                            $('#toggle-hyperlink-button').val('描述有超链接，点击去掉').css({
                                'background-color': '#ff6666',
                                'color': '#f5f5dc'
                            }).prop('disabled', false);
                        } else {
                            $('#toggle-hyperlink-button').val('产品无链接，无需点击此按钮').css({
                                'background-color': '#add8e6',
                                'color': '#ffffff'
                            }).prop('disabled', true);
                        }
                    }
                });

                // 当去掉超链接按钮被点击
                $('#hyperlink-toggle-form').on('submit', function() {
                    $('#toggle-hyperlink-button').val('超链接已去掉，无需点击此按钮').prop('disabled', true);
                    $('#close-hyperlink-button').parent().show();
                });

                // 当关闭超链接功能按钮被点击
                $('#hyperlink-close-form').on('submit', function() {
                    $('#toggle-hyperlink-button').val('描述有超链接，点击去掉').prop('disabled', false);
                    $('#close-hyperlink-button').parent().hide();
                });

            });
        </script>
        <?php
    }

    // 处理表单提交
    public function handle_form_submission() {
        if (!isset($_POST['replace_content_nonce_field']) || !wp_verify_nonce($_POST['replace_content_nonce_field'], 'replace_content_nonce')) {
            wp_die('Nonce 验证失败');
        }

        if (!current_user_can('manage_options')) {
            wp_die('无权限');
        }

        $original_text = sanitize_text_field($_POST['original_text']);
        $new_text = sanitize_text_field($_POST['new_text']);

        global $wpdb;

        // 获取所有产品
        $products = $wpdb->get_results("SELECT ID, post_title, post_content, post_excerpt FROM {$wpdb->posts} WHERE post_type = 'product'");

        // 在替换前保存原始数据
        $history = get_option('content_replacer_history', array());
        $total_replacements = 0;
        foreach ($products as $product) {
            $original_data = array(
                'ID' => $product->ID,
                'post_title' => $product->post_title,
                'post_content' => $product->post_content,
                'post_excerpt' => $product->post_excerpt,
            );
            $title_replacements = substr_count($product->post_title, $original_text);
            $content_replacements = substr_count($product->post_content, $original_text);
            $excerpt_replacements = substr_count($product->post_excerpt, $original_text);
            $total_replacements += $title_replacements + $content_replacements + $excerpt_replacements;
            $history_entry = array(
                'date' => current_time('mysql'),
                'original_text' => $original_text,
                'new_text' => $new_text,
                'data' => $original_data,
                'replacements' => $total_replacements,
            );
            array_unshift($history, $history_entry); // 添加到数组开头
        }
        update_option('content_replacer_history', $history);

        // 执行替换操作
        foreach ($products as $product) {
            $updated_post = array(
                'ID' => $product->ID,
                'post_title' => str_replace($original_text, $new_text, $product->post_title),
                'post_content' => str_replace($original_text, $new_text, $product->post_content),
                'post_excerpt' => str_replace($original_text, $new_text, $product->post_excerpt),
            );
            $wpdb->update(
                $wpdb->posts,
                $updated_post,
                array('ID' => $product->ID)
            );
        }

        wp_redirect(admin_url('admin.php?page=content-replacer'));
        exit;
    }

    // 处理回滚操作
    public function handle_rollback() {
        if (!isset($_GET['rollback_content_nonce_field']) || !wp_verify_nonce($_GET['rollback_content_nonce_field'], 'rollback_content_nonce')) {
            wp_die('Nonce 验证失败');
        }

        if (!current_user_can('manage_options')) {
            wp_die('无权限');
        }

        $date = urldecode($_GET['date']);
        $history = get_option('content_replacer_history', array());

        // 筛选出指定日期的历史记录
        $entries_to_rollback = array_filter($history, function($entry) use ($date) {
            return date('Y-m-d H:i:s', strtotime($entry['date'])) === $date;
        });

        if (!empty($entries_to_rollback)) {
            global $wpdb;
            foreach ($entries_to_rollback as $entry) {
                $original_data = $entry['data'];
                $wpdb->update(
                    $wpdb->posts,
                    array(
                        'post_title' => $original_data['post_title'],
                        'post_content' => $original_data['post_content'],
                        'post_excerpt' => $original_data['post_excerpt'],
                    ),
                    array('ID' => $original_data['ID'])
                );
            }

            // 移除已回滚的历史记录
            $history = array_filter($history, function($entry) use ($date) {
                return date('Y-m-d H:i:s', strtotime($entry['date'])) !== $date;
            });
            update_option('content_replacer_history', $history);

            wp_redirect(admin_url('admin.php?page=content-replacer'));
            exit;
        } else {
            wp_die('无效的历史记录日期');
        }
    }

    // 处理免运费隐藏按钮的表单提交
    public function handle_toggle_shipping() {
        if (!isset($_POST['toggle_shipping_nonce_field']) || !wp_verify_nonce($_POST['toggle_shipping_nonce_field'], 'toggle_shipping_nonce')) {
            wp_die('Nonce 验证失败');
        }

        if (!current_user_can('manage_options')) {
            wp_die('无权限');
        }

        $function_code = "
        function js_hide_all_shipping_when_free_is_available( \$shipping_rates ) {
            foreach ( \$shipping_rates as \$key => \$rate ) {
                if ( \$rate->get_method_id() == 'free_shipping' ) {
                    \$shipping_rates = array( \$key => \$rate );
                }
            }
            return \$shipping_rates;
        }
        add_filter( 'woocommerce_package_rates', 'js_hide_all_shipping_when_free_is_available' );
        ";

        $functions_path = get_template_directory() . '/functions.php';
        $functions_content = file_get_contents($functions_path);

        if (strpos($functions_content, 'js_hide_all_shipping_when_free_is_available') === false) {
            file_put_contents($functions_path, $functions_content . PHP_EOL . $function_code);
        } else {
            $functions_content = str_replace($function_code, '', $functions_content);
            file_put_contents($functions_path, $functions_content);
        }

        wp_redirect(admin_url('admin.php?page=content-replacer'));
        exit;
    }

    // 处理产品模态窗按钮的表单提交
    public function handle_toggle_modal() {
        if (!isset($_POST['toggle_modal_nonce_field']) || !wp_verify_nonce($_POST['toggle_modal_nonce_field'], 'toggle_modal_nonce')) {
            wp_die('Nonce 验证失败');
        }

        if (!current_user_can('manage_options')) {
            wp_die('无权限');
        }

        $function_code = "
        function theme_enqueue_scripts_and_styles() {
            wp_enqueue_style('custom-style', get_stylesheet_directory_uri() . '/css/custom-style.css');
            wp_enqueue_script('custom-script', get_template_directory_uri() . '/js/custom-script.js', array('jquery'), null, true);
            \$inline_script = \"jQuery(document).ready(function($) {
                \$('body').append('<div id=\\\"myModal\\\" class=\\\"modal\\\"><span class=\\\"close\\\">&times;</span><img class=\\\"modal-content\\\" id=\\\"img01\\\"></div>');

                var modal_css = '<style>\
                    .modal {display: none; position: fixed; z-index: 1000; padding-top: 100px; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgb(0,0,0); background-color: rgba(0,0,0,0.9);}\
                    .modal-content {margin: auto; display: block; max-width: 40%; transition: transform 0.3s;}\
                    .close {position: absolute; top: 15px; right: 35px; color: white; font-size: 40px; font-weight: bold; cursor: pointer;}\
                </style>';
                \$('head').append(modal_css);

                var isZoomed = false;

                \$('.woocommerce-product-gallery__image a').click(function(event) {
                    event.preventDefault();
                    var imgSrc = \$(this).find('img').attr('src');
                    \$('#img01').attr('src', imgSrc);
                    \$('#myModal').css('display', 'block');
                    isZoomed = false;
                    \$('#img01').css('transform', 'scale(1)');
                });

                \$('.close, .modal').on('click', function(event) {
                    if (event.target !== this) return;
                    \$('#myModal').css('display', 'none');
                });

                \$('#img01').on('dblclick', function() {
                    if (isZoomed) {
                        \$(this).css('transform', 'scale(1)');
                        isZoomed = false;
                    } else {
                        \$(this).css('transform', 'scale(2)');
                        isZoomed = true;
                    }
                });
            });
        \";

        wp_add_inline_script('custom-script', \$inline_script);
        }

        add_action('wp_enqueue_scripts', 'theme_enqueue_scripts_and_styles');
        ";

        $functions_path = get_template_directory() . '/functions.php';
        $functions_content = file_get_contents($functions_path);

        if (strpos($functions_content, 'theme_enqueue_scripts_and_styles') === false) {
            file_put_contents($functions_path, $functions_content . PHP_EOL . $function_code);
        } else {
            $functions_content = str_replace($function_code, '', $functions_content);
            file_put_contents($functions_path, $functions_content);
        }

        wp_redirect(admin_url('admin.php?page=content-replacer'));
        exit;
    }

    // 处理去产品超链接按钮的表单提交
    public function handle_toggle_hyperlink() {
        if (!isset($_POST['toggle_hyperlink_nonce_field']) || !wp_verify_nonce($_POST['toggle_hyperlink_nonce_field'], 'toggle_hyperlink_nonce')) {
            wp_die('Nonce 验证失败');
        }

        if (!current_user_can('manage_options')) {
            wp_die('无权限');
        }

        $function_code = "
    function remove_product_hyperlinks(\$content) {
        if (is_product()) {
            \$content = preg_replace('/<a href=\".*?\">(.*?)<\/a>/', '\$1', \$content);
        }
        return \$content;
    }
    add_filter('the_content', 'remove_product_hyperlinks');
    ";

        $functions_path = get_template_directory() . '/functions.php';
        $functions_content = file_get_contents($functions_path);

        if (strpos($functions_content, 'remove_product_hyperlinks') === false) {
            file_put_contents($functions_path, $functions_content . PHP_EOL . $function_code);
        }

        wp_redirect(admin_url('admin.php?page=content-replacer'));
        exit;
    }

    // 处理关闭去超链接功能按钮的表单提交
    public function handle_close_hyperlink() {
        if (!isset($_POST['close_hyperlink_nonce_field']) || !wp_verify_nonce($_POST['close_hyperlink_nonce_field'], 'close_hyperlink_nonce')) {
            wp_die('Nonce 验证失败');
        }

        if (!current_user_can('manage_options')) {
            wp_die('无权限');
        }

        $functions_path = get_template_directory() . '/functions.php';
        $functions_content = file_get_contents($functions_path);
        $function_code = "
        function remove_product_hyperlinks(\$content) {
            if (is_product()) {
                \$content = preg_replace('/<a href=\".*?\">(.*?)<\/a>/', '\$1', \$content);
            }
            return \$content;
        }
        add_filter('the_content', 'remove_product_hyperlinks');
        ";

        if (strpos($functions_content, 'remove_product_hyperlinks') !== false) {
            $functions_content = str_replace($function_code, '', $functions_content);
            file_put_contents($functions_path, $functions_content);
        }

        wp_redirect(admin_url('admin.php?page=content-replacer'));
        exit;
    }

    // 新增 AJAX 处理函数，检测简码状态
    // 新增 AJAX 处理函数，检测产品描述中的超链接状态
    public function check_shortcode_status() {
        $functions_path = get_template_directory() . '/functions.php';
        $functions_content = file_get_contents($functions_path);

        $response = array(
            'shipping_hidden' => strpos($functions_content, 'js_hide_all_shipping_when_free_is_available') !== false,
            'modal_enabled' => strpos($functions_content, 'theme_enqueue_scripts_and_styles') !== false,
            'hyperlinks_exist' => false
        );
        global $wpdb;
        $products = $wpdb->get_results("SELECT post_content FROM {$wpdb->posts} WHERE post_type = 'product'");
        foreach ($products as $product) {
            if (preg_match('/<a href=\".*?\">/', $product->post_content)) {
                $response['hyperlinks_exist'] = true;
                break;
            }
        }

        wp_send_json($response);
    }
}

// 实例化插件类
new ContentReplacer();

scripts.js文件

// scripts.js

jQuery(document).ready(function($) {
    $('#content-replacer-form').on('submit', function() {
        $('#loading').show();
    });
    // 隐藏其他插件提示
    $('.notice, .update-nag, .updated, .error, .is-dismissible').not('.content-replacer-container .notice').hide();

    // 提交表单时显示 loading 动画
    $('#shipping-toggle-form, #modal-toggle-form').on('submit', function() {
        $('#loading').show();
    });

    // 检查 function.php 中是否有相关简码
    $.ajax({
        url: ajaxurl,
        data: {
            'action': 'check_shortcode_status'
        },
        success: function(response) {
            if (response.shipping_hidden) {
                $('#toggle-shipping-button').val('其他运费已隐藏');
            }
            if (response.modal_enabled) {
                $('#toggle-modal-button').val('产品图片模态窗已开启');
            }
            if (response.hyperlinks_exist) {
                $('#toggle-hyperlink-button').val('描述有超链接，点击去掉').css({
                    'background-color': '#ff6666',
                    'color': '#f5f5dc'
                }).prop('disabled', false);
            } else {
                $('#toggle-hyperlink-button').val('产品无链接，无需点击此按钮').css({
                    'background-color': '#add8e6',
                    'color': '#ffffff'
                }).prop('disabled', true);
            }

        }
    });

    // 当去掉超链接按钮被点击
    $('#hyperlink-toggle-form').on('submit', function() {
        $('#toggle-hyperlink-button').val('超链接已去掉，无需点击此按钮').prop('disabled', true);
        $('#close-hyperlink-button').parent().show();
    });

    // 当关闭超链接功能按钮被点击
    $('#hyperlink-close-form').on('submit', function() {
        $('#toggle-hyperlink-button').val('描述有超链接，点击去掉').prop('disabled', false);
        $('#close-hyperlink-button').parent().hide();
    });
});

styles.css文件

/* styles.css */

/* 渐变背景色 */
.content-replacer-container {
    background: linear-gradient(135deg, #f9f1e9, #f5e0d3);
    padding: 20px;
    border-radius: 10px;
    color: #333;
    max-width: 800px;
    margin: 50px auto;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.content-replacer-container h1 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 2em;
}

.content-replacer-container .form-table {
    width: 100%;
    margin: 0 auto;
}

.content-replacer-container .form-table th,
.content-replacer-container .form-table td {
    padding: 10px;
    text-align: left;
}

.content-replacer-container input[type="text"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    margin-bottom: 10px;
    box-sizing: border-box;
}

.content-replacer-container .button-primary {
    background: #ffba00;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.content-replacer-container .button-primary:hover {
    background: #ff9500;
}

.content-replacer-container .loading {
    display: none;
    text-align: center;
    padding: 10px;
    margin-top: 20px;
    border-radius: 5px;
    color: #000; /* 将文字颜色改为黑色 */
    font-weight: bold;
}

.content-replacer-container .progress-bar {
    display: none;
    width: 100%;
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 5px;
    overflow: hidden;
    margin-top: 20px;
    position: relative;
}

.content-replacer-container .progress-bar-inner {
    height: 30px;
    background-color: #00aaff;
    width: 0;
    line-height: 30px;
    color: #fff;
    text-align: center;
    white-space: nowrap;
    transition: width 0.5s ease; /* 平滑的过渡效果 */
}

/* 替换历史样式 */
.content-replacer-container ul {
    list-style: none;
    padding: 0;
}

.content-replacer-container ul li {
    background: rgba(255, 255, 255, 0.2);
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 5px;
}

.content-replacer-container ul li a {
    color: #333;
    text-decoration: underline;
    cursor: pointer;
    transition: color 0.3s;
}

.content-replacer-container ul li a:hover {
    color: #ffba00;
}

duola.php