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Integration between
PHP and .NET
Applications
Svetlin Nakov
National Academy for
Software Development
academy.devbg.org
Contents
1. PHP Interoperability
2. PHP and COM
3. Writing WordPress Plug-in in C#
4. Phalanger: Running PHP in .NET CLR
PHP Interoperability
PHP Interoperability
• What is Interoperability?
• Ability to work together with other products,
frameworks, languages and platforms
• PHP Interoperability
• Call external process – shell_exec() function
• Invoke native C/C++ code (.so / .dll libraries)
• dl() function in PHP (load extension library)
• SWIG – http://www.swig.org/
• COM operability (in Windows)
• Web services (REST / SOAP)
PHP and COM
What is COM?
• Component Object Model (COM)
• Microsoft Windows built-in technology
• Inter-process communication between
components and applications
• Example: Display Adobe Acrobat PDF in
Internet Explorer
• Object-oriented approach
• Allows dynamic object creation and method
invocation and properties / events access
• Language-neutral technology
Creating COM Component
in .NET Framework and C#
• Define the COM dispatch interface:
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
public interface ICalculator {
int Sum(int a, int b)
}
• Define the COM implementation class:
namespace PlayingWithCOM
{
[ComVisible(true)]
[Guid("38AADE7B-79B8-31A1-B365-22C6AAE5232C")]
public class Calculator : ICalculator {
public int Sum(int a, int b) { return a + b; }
}
}
Register COM Component
Assembly in the Registry
• Sign the assembly with strong name:
[assembly:AssemblyKeyFile(@"secret-key.snk")]
• Install the assembly in the Global
Assembly Cache (GAC):
gacutil -i PlayingWithCOM.dll
• Register the assembly as COM
component in Windows registry:
regasm PlayingWithCOM.dll
Using COM Objects from
PHP Script
• Creating COM object and invoking
method from PHP:
$calc = new COM("PlayingWithCOM.Calculator");
$result = $calc->Sum(5, 6);
echo $result;
Writing WordPress
Plug-ins in C#
WordPress on IIS
• Running WordPress in IIS
• Run PHP on IIS:
• Install FastCGI ISAPI extension for IIS
• Install and configure PHP for Windows
• Alternatively use Web Platform Installer
• Install and configure MySQL for Windows
• Configure WordPress and URL rewriting:
• ISAPI_Rewrite in IIS 5.1/6
• Microsoft URL Rewrite for IIS 7
Creating WordPress Plug-in
• We want to create WordPress plug-in for
downloading a blog post as PDF document
• Converting HTML page to PDF is not
straightforward problem!
• We prefer to implement this in C#
• Use Internet Explorer through COM
• Open the web page URL in Internet Explorer
• Take the entire page as graphics image
• Cut the image into pages and write them to
PDF document with PdfSharp
• Invoke the C# class from PHP through COM
Creating WordPress Plug-in
(2)
• We want to add a parameter "?pdf" to all
WordPress URLs to produce PDF output
• We hook the WordPress action "init"
add_action('init', 'init_action_handler');
• In the action handler invoke the C#
based Web2Pdf converter
$web2pdf =
new COM("Web2Pdf.WebPageToPDFGenerator");
$pdf_base64 = $web2pdf>GeneratePdfFromWebPageAsBase64($url);
Creating WordPress Plug-In
in C# - Web2Pdf Converter
Live Demo
Phalanger
The PHP Language Compiler for .NET
Phalanger Project: Running
PHP in .NET Framework
• Phalanger Project
• Open source PHP compiler for .NET CLR
• Web site: http://www.php-compiler.net
• Compiles PHP code to MSIL just like C#
• Implements all standard PHP functions
• Two modes of execution:
• Classical PHP execution model – run existing
applications like phpBB, Drupal, etc.
• ASP.NET mode – use ASP.NET with PHP
language – mix .NET and PHP functions
Integration between PHP
and .NET Applications
Questions?