02. php ext module vng
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This document discusses speeding up the ZingMe-NTVV2 application by writing a PHP extension module. It introduces NTVV2, which has high traffic volumes. Writing a PHP extension can make complicated business functions run faster and use less memory compared to pure PHP. The document explains what a PHP extension is, its lifecycle, and how to set up the build environment. It recommends using SWIG, an interface compiler, to more easily connect C/C++ code to PHP as it handles type conversions and exposing functions. The document provides an example of using SWIG to define a module interface, generate code, create a project to compile it, and add the extension to PHP. The goal is to cache data in the
![Useful commands
•Renaming
%rename("to_s") asString();
%rename( "name=" ) set_name( const char *name );
%rename("empty?") empty();
•Aliasing
%alias get "[]";
•Constants
%constant int Script = C_CONSTANT;
•Defines
%define YUILogComponent "bindings"
%enddef
%define %macro(PARAMETER)](https://image.slidesharecdn.com/02-phpextmodule-vng-111109041627-phpapp02/85/02-php-ext-module-vng-17-320.jpg)
02. php ext module vng
- 1. 18/12/2010 Speed up ZingMe-NTVV2 with PHP extension module By Nguyen Trung Thanh ZingMe Team leader Web Technical - VNG
- 4. Introduction • Ntvv2 (http://me.zing.vn/apps/ntvv2) – 1.M daily active user – Average 800 rps (per webserver) max 1100 rps – 9300 rps (all database servers) – 3 webservers • Use Membase for cache and storage • Use other db for secondary storage • All bussiness function is moved to PHP extension
- 5. Why to write PHP module? Make complicated Bussiness functions run faster, consume less memory PHP high-level overhead cpu/mem Advance facility with PHP-FPM Cache something in PHP process Strictly Confidential – Do Not Distribute
- 6. PHP extension basic What is an extension? Lifecycle Setting up a build environment http://devzone.zend.com/article/4486 http://devzone.zend.com/article/1021-Extension-Writing-Part-I- Introduction-to-PHP-and-Zend
- 7. What is an extension? Have you ever used PHP extension? PHP consist of many extensions All function we used is from extensions
- 8. Lifecycle
- 9. Setting up build environment - Setup PHP-devel - Sample extension
- 10. Is it complicated? ● Is there any sexier and easier way? ● We can use SWIG
- 11. SWIG SWIG is an interface compiler that connects programs written in C and C++ with scripting languages such as PHP, Python, Ruby... How SWIG works Using SWIG Install module to PHP extensions Sample Strictly Confidential – Do Not Distribute
- 12. How SWIG works
- 13. What does SWIG do for you ? Namespace Constants Type conversion For simple types (int, float, char *, enum) Wraps complex types Pointers to structs and classes Exposes functions
- 14. Using SWIG Defile module in swig file Generate source code Create module project, build it
- 15. Define module Data type Wrapper class/functions %module ntvv2module %{ #include <string> #include <vector> #include <list> #include <string> #include “ntvvgame.h" %} struct LandInfo{ int id; std::string data; } ; Strictly Confidential – Do Not Distribute LandInfo updateLandInfo(int uid, int landID);
- 16. Exposure •Swig recognizes C/C++ declarations 'struct' or 'class' functions •Hiding elements %ignore solver::noupdate; %include “satsolver/solver.h”
- 17. Useful commands •Renaming %rename("to_s") asString(); %rename( "name=" ) set_name( const char *name ); %rename("empty?") empty(); •Aliasing %alias get "[]"; •Constants %constant int Script = C_CONSTANT; •Defines %define YUILogComponent "bindings" %enddef %define %macro(PARAMETER)
- 18. SWIG steps Generate code Create project, compiling – Add genterated code to project Running – Add extension module to PHP
- 19. Sample Cache data in PHP module Strictly Confidential – Do Not Distribute
- 20. Q&A