Trace is a low-overhead tracing tool for PHP.

It can trace all PHP execution, function calls, request information during
run-time. And provides features like Filter, Statistics, Current Status and
so on.
It is very useful to locate blocking, heavy-load problems and debug in all
environments, especially in production environments.

WWW: https://pecl.php.net/package/trace

PR:		200363
Submitted by:	Gasol Wu <gasol.wu@gmail.com>