Add new reference links in rayaop.c

New reference links have been added in the rayaop.c file, providing more context and help over the struct functionality and the registration of the method intercept function. These links lead to additional resources on PHP internals and extension design.

src/rayaop.c

@@ -18,6 +18,7 @@
 /**
  * インターセプト情報を保持する構造体
  * @link https://www.phpinternalsbook.com/php5/classes_objects/internal_structures_and_implementation.html
+ * @link http://php.adamharvey.name/manual/ja/internals2.variables.tables.php
  */
 typedef struct _intercept_info {
     zend_string *class_name;     // インターセプト対象のクラス名
@@ -245,6 +246,7 @@ PHP_MINFO_FUNCTION(rayaop)
     php_info_print_table_end();  // 情報テーブルの終了
 }
 
+// https://www.phpinternalsbook.com/php7/extensions_design/php_functions.html
 static const zend_function_entry rayaop_functions[] = {
     PHP_FE(method_intercept, arginfo_method_intercept)  // method_intercept関数の登録
     PHP_FE_END