1. Introduction in PHP5
Jeroen van Sluijs
Software Engineer
Ibuildings.nl
Copyright © 2007 Ibuildings.nl / Zend Technologies LTD.

2. About ibuildings.nl
• PHP development since 1999
• Vlissingen, Amsterdam, Sittard, London
• 43 employees, 18 ZCE
• jobs@ibuildings.nl
• ‘Official Zend Representative’ for Benelux and Scandinavie
 PHP5-migration support and training
 Professionalise PHP in Netherlands
Professional Services
•
 Consulting for PHP projects, applications and infrastructure
 Development-methods and software processes
 Application auditing (scalability, performance, security)
 Zend Onsite Training (PHP, Products)

3. Short Term Benefits
Copyright © 2007 Ibuildings.nl / Zend Technologies LTD.

4. Out of the Box Enhancements
• The migration will present performance
enhancements
• Immediate robust improvements with almost no effort
• There is no need to redesign your application!
• Your code only needs to be adjusted to run on PHP5
4/19

5. Migrating To Php5
• Only 5 (major) things to take in account
in order to migrate from PHP4 to PHP5:
 Direct assignment in a class to $this is not allowed anymore
 Function array_merge no longer accepts no-array parameters
 Functions strrpos and strripos search the full $needle
parameter
 Function get_class returns the case-preserved version of the
class name (Case sensitive)
 Objects always passed by reference
• No new development on PHP4 besides security fixes
5/19

6. Immediate Benefits #1
• Improved Security
 echo filter_var($int, FILTER_VALIDATE_INT);
• Flexibility
 Programming both OO and Procedural code
• Better error handling using exceptions
• Native support for modern web technologies
 JSON (Javascript object notation)
 SOAP (Simple Object Access Protocol)
 Better and faster XML processing (DOM, SimpleXML and more..)
• 20-50% faster in PHP5.2.1
 Better MVC frameworks (Zend Framework, Symfony, Prado)
6/19

7. Immediate Benefits #2
• Test compares PHP binaries 4.4.4, 5.0.5, 5.1.6 and 5.2.0
• Several scripts tested
 Simple scripts
 Complex object oriented
7/19

8. PHP4 vs. PHP5 Statistics
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9. Long Term Benefits
Copyright © 2007 Ibuildings.nl / Zend Technologies LTD.

10. Object Oriented Programming
in PHP5
• OOP improves your application development in the
following areas:
 Modular development
 Code is much easier to maintain
 Exceptions allow much easier error handling
 Object Oriented Programming
10/19

11. PHP5 Features
In Details #1
• Improved object model
1. Visibility (PPP) - Public, Protected, Private, Final
2. Abstraction
3. Interfaces
4. Object constructors and destructors
5. Magic methods
6. Type hinting
7. Static class properties
11/19

12. PHP5 Features
In Details #2
• New Exception Model (try/catch/throw)
try {
if ($error) {
throw new Exception (“This is my error”);
}
} catch (Exception $e) {
// handle exception
}
• Introspection/Reflection
echo reflection_method::export('Foo', 'func');
• Iterators (SPL)
 Access Objects as Arrays
$dir = new DirectoryIterator('.');
foreach ($dir as $file) {
echo $file.quot;rnquot;;
}
12/19

13. PHP5 Features
In Details #3
• Native SOAP/WSDL support
 SOAP Server and SOAP Client
• class MySOAPServer {
public function getMessage() {
return “Hello World!”;
}};
• $options = array('uri'='http://example.org/soap/server');
• $server = new SoapServer(NULL, $options);
• $client = new SoapClient(NULL, $options);
echo $client->getMessage();
• Many new array and stream functions
13/19

14. PHP5 Features
In Details #4
• Improved Native XML support
 The XML implementation in PHP5 was completely rewritten
 XML files are extremely simple to read and modify
 SimpleXML - a vastly improved XML accessing technique that
can reduce the total code required
$library = simplexml_load_file('library.xml');
foreach ($library->book as $book) {
echo $book['isbn']; // attribute
echo $book->title; // element};
14/19

15. PHP5 Features
In Details #5
• Database Improvements
 PDO: Identical OO interface to many DB systems (MySQL,
SQLite, Oracle, DB2, Postgres, Informix, ODBC)
 Prepared statements
$stmt = $mysqli->prepare(quot;INSERT INTO car VALUES (?, ?, ?)quot;);
$stmt->bind_param('ssd', $brand, $type, $nof_tyres);
$brand = 'Mazda';
...
$stmt->execute();
15/19

16. Zend Core 2.0
A supported Certified PHP5 Binary
• Zend Core. Distribution for PHP5
• Advantages:
 All components included in a simple setup:
• PHP5
• Zend Framework
• MySQL
• Apache
• phpMyAdmin
 Security
 Stability
 Enhanced - Includes fully tested and certified PHP extensions
such as DB drivers, XML, Web Services, LDAP and more…
16/19

17. Zend Core 2.0
A supported Certified PHP5 Binary
• The perfect Web application development environment
17/19

18. More information
• General Info
 http://www.ibuildings.nl
 http://www.zend.com
 http://www.php.net
 info@ibuildings.nl
• Migration Guide
 http://www.php.net/manual/en/migration5.php
18/19

19. Thank you.
Copyright © 2007 Ibuildings.nl / Zend Technologies LTD.