Add debug mode to RayAOP extension

A debug output toggle has been introduced to the RayAOP extension. This allows for conditional output of debug information, which may assist in troubleshooting issues with the extension. The output can be controlled using the --enable-rayaop-debug option during the configuration process.

config.m4

@@ -38,7 +38,14 @@ if test "$PHP_RAYAOP" != "no"; then
   PHP_ARG_ENABLE(rayaop-quiet, whether to suppress experimental notices,
   [ --enable-rayaop-quiet   Suppress experimental notices], no, yes)
 
+  PHP_ARG_ENABLE(rayaop-debug, whether to enable debug output,
+  [ --enable-rayaop-debug   Enable debug output], no, yes)
+
   if test "$PHP_RAYAOP_QUIET" != "no"; then
       AC_DEFINE(RAYAOP_QUIET, 1, [Whether to suppress experimental notices])
   fi
+
+  if test "$PHP_RAYAOP_DEBUG" != "no"; then
+      AC_DEFINE(RAYAOP_DEBUG, 1, [Whether to enable debug output])
+  fi
 fi

rayaop.c

@@ -8,6 +8,10 @@
 #define RAYAOP_QUIET 0
 #endif
 
+#ifndef RAYAOP_DEBUG
+#define RAYAOP_DEBUG 0
+#endif
+
 #include "php_rayaop.h"  /* Include header file for RayAOP extension */
 
 /* Declaration of module global variables */