PHP: Debugger, Profiler and more

PHP Debugger, Profiler & more Vo Duy Tuan – <tuanmaster2002@yahoo.com> Bloghoctap.com Coding is not enough!

$Table_of_contents
IDEs for Web Developer
Debugging
Profiling
Load Testing
Tài trợ:

Learn about IDE.
IDEs for Web Developer 1

1.1. What is an IDE?
Integrated Development Environment
Application for software development
Common Features:
Syntax highlight
Autocomplete
File Explorer
Collapse/Expand

1.2. Common IDEs for Web Developer
Notepad, Notepad++
Adobe Dreamweaver
Aptana
Komodo
PhpEd
Zend Studio
PHP Designer
…

1.3. Recommend Features for PHP IDE
Built-in parser
Documentor
Debugger
DB Client
Text Format

1.4. Small Quizz
What is the difference between 2 screenshots?

IDE for PHP, support HTML, CSS
Paid Software, current version: 5.9
Main Features:
Debugger
Autocomplete
DB Client
Documentor
Code Explorer
Exclude folders, files in project.
1.5. NuSphere PhpEd Introduction

1.6. NuSphere PhpEd screenshot

Learn how to use PhpEd Debugger to debug your web applications.
Debugging 2

What is debug?
Find errors in your code.
How to debug?
Output with HTML: echo() , print_r() , var_dump()
Store debug information: File, Database
Live debug: PhpEd Debugger
2.1. Debug Introduction

Integrate with Firefox (DBGbar addon)
Step debugging
Multi breakpoint
Watch runtime variables
Watch call stack
Remote debugging
2.2. PhpEd Debugger features

2.3. PhpEd Debugger Installation
Step 1: Install php extension
Step 2: Install DBGbar addon for Firefox
Step 3: Update PHP.INI config
Restart your web server (if needed)

Step 1: Install PHP Extension
Go to ‘C:..nuspherephpeddebuggerserver’
Select correct library for your platform and PHP version
Copy file (.dll on Windows) to php extension folder

Step 2: Install DBGbar addon
In Firefox, go to menu Tools >> Add-ons
Search ‘DBGbar’ and install.
Restart Firefox, you will get DBGbar toolbar:

Add dbg extension to extension list:
extension=dbg-php-5.2.dll
Add configuration for debugger
[debugger] debugger.enabled=on debugger.profiler_enabled=on debugger.hosts_allow=localhost apple.com debugger.hosts_deny=ALL debugger.ports=7869, 10000/16

2.4. PhpEd Debugger usage

2.5. DEMO Debugging

Learn how to use Xdebug extension to find bottleneck and increase performance for your web applications.
Profiling 3

3.1. Profiling Introduction
Find bottleneck
Make application run faste

3.2. Two ways of profiling
Built-in profiler
3 rd -party profiler

3.2.1. Built-in profiler
Tracking code embed in your PHP code
Example: Using timer start & stop

3.2.1. Built-in profiler…cont.

3.2.2. 3 rd -party profiler
Install new extension
Do not change your PHP code
More Information
Famous Library: Xdebug

3.3. Xdebug Installation
Restart your server (if needed)

Download correct extension for your platform & PHP version
Can go to ‘ http://www.xdebug.org/find-binary.php ’ to find correct Xdebug file for your system from phpinfo() output
Copy file (.dll on Windows) to php extension folder

Add configuration for xdebug:
[xdebug]
zend_extension_ts = C:AppServphp5extphp_xdebug-2.1.0-5.2-vc6.dll
xdebug.profiler_output_dir = "C:xdebug"
xdebug.profiler_output_name = "callgrind.%R.%t"
xdebug.profiler_enable = 0
xdebug.profiler_append=0
xdebug.profiler_enable_trigger = 1
xdebug.extended_info=1

3.4. Xdebug Usage
Step 1: Generate cachegrind file
Base on xdebug config in PHP.INI to create cachegrind file.
For above php.ini config: Add parameter XDEBUG_PROFILE to your request string will create cachegrind file. Examp;e:
Normal : http://bloghoctap.com
Profiler: http://bloghoctap.com?XDEBUG_PROFILE

2.4. Xdebug Usage…
Step 2: View & analyze your profile result:
WinCacheGrind
Kcachegrind

2.4.1. WinCacheGrind Viewer

2.4.2. Kcachegrind Viewer

3.5. DEMO Profiling

Benchmark your web application.
Load Testing 4

4.1. ApacheBench

4.2. Apache jMeter

… Võ Duy Tuấn
… [email_address]
… Web Freelancer
… PHP Trainer
… http://blogHoctap.com
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Thanks you!

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PHP: Debugger, Profiler and more

by Võ Duy Tuấn on Apr 10, 2011

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