phptrace

We have a new trace tool Molten, It's an OpenTracing supported tracer, for Distributed Tracing System.

我们开发了新的Trace工具 Molten， 它支持OpenTracing，用于分布式追踪系统。

Readme in Chinese 中文

phptrace is a low-overhead tracing tool for PHP.

It can trace all PHP executing, 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.

Features:

• low-overhead, when extension loaded and trace is off
• stable, running on Qihoo 360 and tested on mainstream frameworks
• ease of use, view PHP run-time status without extension installation

Misc:

• PECL Download

News We have build another interesting project pika. It's a NoSQL compatible with Redis protocol with huge storage space.

Install from source

1. Extracting tarball

   tar -xf phptrace-{version}.tar.gz
   cd phptrace-{version}/extension
   

2. Build

   PHP Extension

   {php_bin_dir}/phpize
   ./configure --with-php-config={php_bin_dir}/php-config
   make
   

   CLI Binary

   make cli
   

3. Install & Configure

   Install PHP Extension, CLI Binary into PHP path

   make install-all
   

   Edit php.ini, add the following line. A reload is needed if PHP running on php-fpm mode.

   extension=trace.so
   

4. Verify

   php -r 'for ($i = 0; $i < 20; $i++) usleep(50000);' &
   phptrace -p $!
   

   You should see something below if it works fine

   process attached
   [pid 3600]> cli php -
   [pid 3600]> {main}() called at [Command line code:1]
   [pid 3600]    > usleep(50000) called at [Command line code:1]
   [pid 3600]    < usleep(50000) = NULL called at [Command line code:1] ~ 0.051s 0.051s
   [pid 3600]    > usleep(50000) called at [Command line code:1]
   [pid 3600]    < usleep(50000) = NULL called at [Command line code:1] ~ 0.051s 0.051s
   [pid 3600]    > usleep(50000) called at [Command line code:1]
   [pid 3600]    < usleep(50000) = NULL called at [Command line code:1] ~ 0.051s 0.051s
   [pid 3600]    > usleep(50000) called at [Command line code:1]
   ...
   

Usage

Just try php example.php.

Command line options

• trace trace running php process(default)
• status display php process status
• version show version
• -p specify php process id ('all' to trace all processes)
• -h show helper
• -v same as version
• -f filter data by type(url,function,class) and content
• -l limit output count
• --ptrace in status mode fetch data using ptrace

Trace executing

$ phptrace -p 3600

[pid 3600]    > Me->run() called at [example.php:57]
[pid 3600]        > Me->say("good night") called at [example.php:33]
[pid 3600]        < Me->say("good night") = NULL called at [example.php:33] ~ 0.000s 0.000s
[pid 3600]        > Me->sleep() called at [example.php:34]
[pid 3600]            > Me->say("sleeping...") called at [example.php:27]
[pid 3600]            < Me->say("sleeping...") = NULL called at [example.php:27] ~ 0.000s 0.000s
[pid 3600]            > sleep(2) called at [example.php:28]
[pid 3600]            < sleep(2) = 0 called at [example.php:28] ~ 2.000s 2.000s
[pid 3600]        < Me->sleep() = NULL called at [example.php:34] ~ 2.000s 0.000s
[pid 3600]        > Me->say("wake up") called at [example.php:35]
[pid 3600]        < Me->say("wake up") = NULL called at [example.php:35] ~ 0.000s 0.000s
[pid 3600]    < Me->run() = NULL called at [example.php:57] ~ 2.000s 0.000s

Print current status

$ phptrace status -p 3600

------------------------------- Status --------------------------------
PHP Version:       7.0.16
SAPI:              cli
script:            example.php
elapse:            26.958s
------------------------------ Arguments ------------------------------
$0
------------------------------ Backtrace ------------------------------
#0  fgets() called at [example.php:53]
#1  {main}() called at [example.php:53]

Tracing with filter of url/class/function

$ phptrace -p 3600 -f type=class,content=Me

[pid 3600]> Me->run() called at [example.php:57]
[pid 3600]> Me->say("good night") called at [example.php:33]
[pid 3600]< Me->say("good night") = NULL called at [example.php:33] ~ 0.000s 0.000s
[pid 3600]> Me->sleep() called at [example.php:34]
[pid 3600]> Me->say("sleeping...") called at [example.php:27]
[pid 3600]< Me->say("sleeping...") = NULL called at [example.php:27] ~ 0.000s 0.000s
[pid 3600]< Me->sleep() = NULL called at [example.php:34] ~ 2.000s 2.000s
[pid 3600]> Me->say("wake up") called at [example.php:35]
[pid 3600]< Me->say("wake up") = NULL called at [example.php:35] ~ 0.000s 0.000s
[pid 3600]< Me->run() = NULL called at [example.php:57] ~ 2.001s 0.000s

Limit frame/URL display times

$ phptrace -p 3600 -l 2

[pid 3600]    > Me->run() called at [example.php:57]
[pid 3600]        > Me->say("good night") called at [example.php:33]
[pid 3600]        < Me->say("good night") = NULL called at [example.php:33] ~ 0.000s 0.000s
[pid 3600]        > Me->sleep() called at [example.php:34]
[pid 3600]            > Me->say("sleeping...") called at [example.php:27]
[pid 3600]            < Me->say("sleeping...") = NULL called at [example.php:27] ~ 0.000s 0.000s

Contributing

Welcome developers who willing to make PHP environment better.

If you are interested but have no idea about how to starting, please try these below:

• Use it on your system, feedback problem, feature request.
• Here is roadmap, try to develop one.
• Any other? Contact phobosw@gmail.com.

License

This project is released under the Apache 2.0 License.