预定义常量

下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。

XHPROF_FLAGS_NO_BUILTINS (integer)

Used to skip all built-in (internal) functions.

XHPROF_FLAGS_CPU (integer)

Used to add CPU profiling information to the output.

XHPROF_FLAGS_MEMORY (integer)

Used to add memory profiling information to the output.