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。
| Constant | Value | Description |
|---|---|---|
FUNCTION_TRACE (integer) |
1 | |
ARGS_TRACE (integer) |
2 | |
ASSIGNMENT_TRACE (integer) |
4 | |
STATEMENT_TRACE (integer) |
8 | |
MEMORY_TRACE (integer) |
16 | |
TIMING_TRACE (integer) |
32 | |
SUMMARY_TRACE (integer) |
64 | |
ERROR_TRACE (integer) |
128 | |
PROF_TRACE (integer) |
256 | |
APD_VERSION (string) |
example: 1.0.2-dev |
