diff --git a/index.php b/index.php
index b6a88de..31ed316 100644
--- a/index.php
+++ b/index.php
@@ -1,72 +1,76 @@
-<?php
-/**
- * Plugin Name:  io Code Highlight
- * Plugin URI:   https://www.iotheme.cn/store/io-code-highlight.html
- * Description:  一个代码语法高亮插件
- * Version:      2.0.1
- * Author:       一为
- * Author URI:   https://www.iowen.cn
- * License:      GPL2
- * License URI:  https://www.gnu.org/licenses/gpl-2.0.html
- * Text Domain:  i_theme
- */
-
-define('IOTHEME_BLOCK_VERSION', '2.0.1');
-define('IOTHEME_BLOCK_URL', plugins_url('', __FILE__));
-define('IOTHEME_BLOCK_PATH', plugin_dir_path( __FILE__ ) );
-
-define('IOTHEME_DEFAULT_LANG', 'php');
-define('IOTHEME_DEFAULT_NUMB', true);
-
-require IOTHEME_BLOCK_PATH . '/tinymce.php';
-require IOTHEME_BLOCK_PATH . '/block.php';
-require IOTHEME_BLOCK_PATH . '/code-languages.php';
-
-/**
- * 加载enlighter js
- */
-function io_code_add_enlighter_assets() {
-    // 请检查是否需要加载高亮代码
-    if ( ! is_admin() ) {
-        global $posts;
-        $force_load = apply_filters( 'io_code_assets_force_loading', false );
-        // 判断是否存在代码块
-        // 如果未找到块，则跳过加载资源
-        if ( !$force_load ) {
-            $found_block = array_reduce( $posts, function($found, $post) { 
-                return $found || has_block( 'code', $post ) || preg_match('/(crayon-|<\/pre>)/i', $post->post_content, $matches);
-            }, false );
-            if ( !$found_block ) {
-                return;
-            }
-        }
-    }
-    
-    $_min = WP_DEBUG === true?'':'.min';
-
-    wp_register_style( 'enlighterjs', IOTHEME_BLOCK_URL . '/assets/css/enlighterjs'.$_min.'.css', array(), IOTHEME_BLOCK_VERSION ); 
-    wp_register_script( 'enlighterjs',    IOTHEME_BLOCK_URL . '/assets/js/enlighterjs'.$_min.'.js', array('jquery'), IOTHEME_BLOCK_VERSION, true );
-
-    if(is_single()){
-        wp_enqueue_style('enlighterjs');
-        wp_enqueue_script('enlighterjs');
-
-        wp_localize_script('enlighterjs', 'io_code_settings', array(
-            'pre_c'        => '© '.get_bloginfo('name'),
-        ));
-    }
-}
-add_action('wp_enqueue_scripts',  'io_code_add_enlighter_assets' );
-
-/**
- * 为编辑器添加全局变量
- * @return void 
- */
-function io_code_plugin_mce_config(){ 
-	echo '<script type="text/javascript">/* <![CDATA[ */
-	const io_code_languages = ' . json_encode( io_code_languages() ) . '; 
-	const io_code_default_lang = "' . IOTHEME_DEFAULT_LANG . '";
-	const io_code_default_numb = ' . (IOTHEME_DEFAULT_NUMB?'true':'false') . ';
- /* ]]> */</script>';
-}
-add_action('admin_print_scripts', 'io_code_plugin_mce_config');//wp_enqueue_editor | wp_head
+<?php
+/**
+ * Plugin Name:  io Code Highlight
+ * Plugin URI:   https://www.iotheme.cn/store/io-code-highlight.html
+ * Description:  一个代码语法高亮插件
+ * Version:      2.0.1
+ * Author:       一为
+ * Author URI:   https://www.iowen.cn
+ * License:      GPL2
+ * License URI:  https://www.gnu.org/licenses/gpl-2.0.html
+ * Text Domain:  i_theme
+ */
+
+define('IOTHEME_BLOCK_VERSION', '2.0.1');
+define('IOTHEME_BLOCK_URL', plugins_url('', __FILE__));
+define('IOTHEME_BLOCK_PATH', plugin_dir_path( __FILE__ ) );
+
+define('IOTHEME_DEFAULT_LANG', 'php');
+define('IOTHEME_DEFAULT_NUMB', true);
+
+require IOTHEME_BLOCK_PATH . '/tinymce.php';
+require IOTHEME_BLOCK_PATH . '/block.php';
+require IOTHEME_BLOCK_PATH . '/code-languages.php';
+
+/**
+ * 加载enlighter js
+ */
+function io_code_add_enlighter_assets() {
+    // 请检查是否需要加载高亮代码
+    if ( ! is_admin() ) {
+        global $posts;
+        $force_load = apply_filters( 'io_code_assets_force_loading', false );
+        // 判断是否存在代码块
+        // 如果未找到块，则跳过加载资源
+        if ( !$force_load ) {
+            if (isset($posts) && is_array($posts)) {
+                $found_block = array_reduce( $posts, function($found, $post) { 
+                    return $found || has_block( 'code', $post ) || preg_match('/(crayon-|<\/pre>)/i', $post->post_content, $matches);
+                }, false );
+                if ( !$found_block ) {
+                    return;
+                }
+            } else {
+                return;
+            }
+        }
+    }
+    
+    $_min = WP_DEBUG === true?'':'.min';
+
+    wp_register_style( 'enlighterjs', IOTHEME_BLOCK_URL . '/assets/css/enlighterjs'.$_min.'.css', array(), IOTHEME_BLOCK_VERSION ); 
+    wp_register_script( 'enlighterjs',    IOTHEME_BLOCK_URL . '/assets/js/enlighterjs'.$_min.'.js', array('jquery'), IOTHEME_BLOCK_VERSION, true );
+
+    if(is_single()){
+        wp_enqueue_style('enlighterjs');
+        wp_enqueue_script('enlighterjs');
+
+        wp_localize_script('enlighterjs', 'io_code_settings', array(
+            'pre_c'        => '© '.get_bloginfo('name'),
+        ));
+    }
+}
+add_action('wp_enqueue_scripts',  'io_code_add_enlighter_assets' );
+
+/**
+ * 为编辑器添加全局变量
+ * @return void 
+ */
+function io_code_plugin_mce_config(){ 
+	echo '<script type="text/javascript">/* <![CDATA[ */
+	const io_code_languages = ' . json_encode( io_code_languages() ) . '; 
+	const io_code_default_lang = "' . IOTHEME_DEFAULT_LANG . '";
+	const io_code_default_numb = ' . (IOTHEME_DEFAULT_NUMB?'true':'false') . ';
+ /* ]]> */</script>';
+}
+add_action('admin_print_scripts', 'io_code_plugin_mce_config');//wp_enqueue_editor | wp_head