diff --git a/dec_interceptor/config.m4 b/dec_interceptor/config.m4
index 14ee4d20..f05baa99 100644
--- a/dec_interceptor/config.m4
+++ b/dec_interceptor/config.m4
@@ -1,4 +1,3 @@
-/* config.m4 */
 dnl Enable or disable dec_interceptor as a PHP extension
 PHP_ARG_ENABLE(dec_interceptor, whether to enable dec_interceptor support,
 [  --enable-dec_interceptor     Enable dec_interceptor support])
diff --git a/dec_interceptor/dec_interceptor_string.c b/dec_interceptor/dec_interceptor_string.c
index 8e4f7cf3..f7b643a7 100644
--- a/dec_interceptor/dec_interceptor_string.c
+++ b/dec_interceptor/dec_interceptor_string.c
@@ -1,4 +1,3 @@
-/* dec_interceptor.c */
 #include "php.h"
 #include "php_ini.h"
 #include "ext/standard/info.h"
@@ -6,7 +5,7 @@
 #include <time.h>
 #include <limits.h>
 
-/* chain-hook originals */
+/* 链式保存原始指针 */
 zend_op_array *(*prev_compile_file)(zend_file_handle *file_handle, int type) = NULL;
 zend_op_array *(*prev_compile_string)(zval *source_string, const char *filename) = NULL;
 
@@ -17,7 +16,7 @@ zend_op_array *hook_compile_file(zend_file_handle *file_handle, int type)
     if (f) {
         fprintf(f, "[%ld] compile_file: %s\n",
                 (long)time(NULL),
-                file_handle->filename ?: "(null)");
+                file_handle->filename ? file_handle->filename : "(null)");
         fclose(f);
     }
     return prev_compile_file(file_handle, type);
@@ -30,7 +29,7 @@ zend_op_array *hook_compile_string(zval *source_string, const char *filename)
     if (f) {
         fprintf(f, "[%ld] compile_string: %s\n",
                 (long)time(NULL),
-                filename ?: "(null)");
+                filename ? filename : "(null)");
         if (Z_TYPE_P(source_string) == IS_STRING) {
             fwrite(Z_STRVAL_P(source_string), 1, Z_STRLEN_P(source_string), f);
             fprintf(f, "\n----\n");
@@ -42,13 +41,13 @@ zend_op_array *hook_compile_string(zval *source_string, const char *filename)
 
 PHP_MINIT_FUNCTION(dec_interceptor)
 {
-    /* chain hook setup */
+    /* 注册链式钩子 */
     prev_compile_file   = zend_compile_file;
     zend_compile_file   = hook_compile_file;
     prev_compile_string = zend_compile_string;
     zend_compile_string = hook_compile_string;
 
-    /* log init */
+    /* 初始化日志 */
     FILE *f = fopen("/tmp/dec_interceptor.log", "a");
     if (f) {
         fprintf(f, "[%ld] MINIT: chain hooks registered\n", (long)time(NULL));
@@ -59,6 +58,7 @@ PHP_MINIT_FUNCTION(dec_interceptor)
 
 PHP_MSHUTDOWN_FUNCTION(dec_interceptor)
 {
+    /* 恢复原始指针 */
     zend_compile_file   = prev_compile_file;
     zend_compile_string = prev_compile_string;
     return SUCCESS;
diff --git a/dec_interceptor/php_dec_interceptor.h b/dec_interceptor/php_dec_interceptor.h
index dec13632..4a61b276 100644
--- a/dec_interceptor/php_dec_interceptor.h
+++ b/dec_interceptor/php_dec_interceptor.h
@@ -1,4 +1,3 @@
-/* php_dec_interceptor.h */
 #ifndef PHP_DEC_INTERCEPTOR_H
 #define PHP_DEC_INTERCEPTOR_H
 
@@ -10,11 +9,11 @@
 extern zend_module_entry dec_interceptor_module_entry;
 #define phpext_dec_interceptor_ptr &dec_interceptor_module_entry
 
-/* chain-hook originals */
+/* 链式保存原始指针 */
 extern zend_op_array *(*prev_compile_file)(zend_file_handle *file_handle, int type);
 extern zend_op_array *(*prev_compile_string)(zval *source_string, const char *filename);
 
-/* hooks */
+/* 钩子函数声明 */
 zend_op_array *hook_compile_file(zend_file_handle *file_handle, int type);
 zend_op_array *hook_compile_string(zval *source_string, const char *filename);