- Add the original example script to the CVS so that it's always available.

diff --git a/Zend/tests/zend2.php b/Zend/tests/zend2.php
new file mode 100644 (file)
index 0000000..f4466b7
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+++ b/Zend/tests/zend2.php
@@ -0,0 +1,339 @@
+Example 1: A singleton (static members)
+=======================================
+
+<?php
+
+       class Counter {
+               var $counter = 0;
+               
+               function increment_and_print()
+               {
+                               print ++$this->counter;
+                               print "\n";
+               }       
+       }
+       
+       
+       class SingletonCounter {
+               static $m_instance = NULL;
+               
+               function Instance()
+               {
+                               if (self::$m_instance == NULL) {
+                                       self::$m_instance = new Counter();
+                               }
+                               return self::$m_instance;
+               }       
+       }
+       
+       SingletonCounter::Instance()->increment_and_print();
+       SingletonCounter::Instance()->increment_and_print();
+       SingletonCounter::Instance()->increment_and_print();
+       
+?>
+
+Example 2: Factory method (derefencing objects returned from functions)
+=======================================================================
+
+<?php
+       
+       class Circle {
+               function draw()
+               {
+                       print "Circle\n";       
+               }
+       }
+       
+       class Square {
+               function draw()
+               {
+                       print "Square\n";       
+               }
+       }
+       
+       function ShapeFactoryMethod($shape)
+       {
+               switch ($shape) {
+                       case "Circle":
+                               return new Circle();
+                       case "Square":
+                               return new Square();
+               }       
+       }
+       
+       ShapeFactoryMethod("Circle")->draw();
+       ShapeFactoryMethod("Square")->draw();
+       
+       
+?>
+
+Example 3: Nested class
+=======================
+
+<?php
+       
+       class Database {
+               class MySQL {
+                       var $host = "";
+                       
+                       function db_connect($user) {
+                               print "Connecting to MySQL database '$this->host' as $user\n";
+                       }
+               }
+               
+               class Oracle {
+                       var $host = "localhost";
+                       
+                       function db_connect($user) {
+                               print "Connecting to Oracle database '$this->host' as $user\n";
+                       }
+                       
+               }       
+       }
+       
+       $MySQL_obj = new Database::MySQL();
+       $MySQL_obj->db_connect("John");
+       
+       $Oracle_obj = new Database::Oracle();
+       $Oracle_obj->db_connect("Mark");
+
+       unset($MySQL_obj);
+       unset($Oracle_obj);
+?>
+       
+Example 3: Nested class suitable for a PEAR like hierarchy
+==========================================================
+
+<?php
+       
+       class DB::MySQL {
+               var $host = "";
+               
+               function db_connect($user) {
+                       print "Connecting to MySQL database '$this->host' as $user\n";
+               }
+       }
+               
+       class DB::Oracle {
+               var $host = "localhost";
+               
+               function db_connect($user) {
+                       print "Connecting to Oracle database '$this->host' as $user\n";
+               }
+               
+       }       
+       
+       $MySQL_obj = new DB::MySQL();
+       $MySQL_obj->db_connect("Susan");
+       
+       $Oracle_obj = new DB::Oracle();
+       $Oracle_obj->db_connect("Barbara");
+       
+?>
+
+Example 4: Class constants and class scope
+==========================================
+
+<?php
+
+       class ErrorCodes {
+               const FATAL = "Fatal error\n";
+               const WARNING = "Warning\n";
+               const INFO = "Informational message\n";
+               
+               function print_fatal_error_codes()
+               {
+                       print "FATAL = " . FATAL;
+                       print "self::FATAL = " . self::FATAL;
+               }
+       }
+       
+       /* Call the static function and move into the ErrorCodes scope */
+       ErrorCodes::print_fatal_error_codes();
+
+?>
+
+Example 5: Regular object method using both local and global functions
+======================================================================
+
+<?php
+
+       class HelloWorld {
+               const HELLO_WORLD = "Hello, World!\n";
+               
+               function get_hello_world()
+               {
+                       return HELLO_WORLD;
+               }
+               
+               function length_of_hello_world()
+               {
+                       $str = get_hello_world();
+                       return strlen($str);
+               }       
+       }
+       
+       $obj = new HelloWorld();
+       print "length_of_hello_world() = " . $obj->length_of_hello_world();
+       print "\n";
+?>
+
+Example 6: Multiple derefencing of objects returned from methods
+================================================================
+
+<?php
+
+
+       class Name {
+               function Name($_name)
+               {
+                       $this->name = $_name;   
+               }
+               
+               function display()
+               {
+                       print $this->name;
+                       print "\n";
+               }
+       }
+       
+       class Person {
+               function Person($_name, $_address)
+               {
+                       $this->name = new Name($_name);
+               }
+               
+               function getName()
+               {
+                       return $this->name;     
+               }
+       }       
+
+       $person = new Person("John", "New York");
+       print $person->getName()->display();
+       
+?>
+
+Example 7: Exception handling
+=============================
+
+<?
+       class MyException {
+               function MyException($_error) {
+                       $this->error = $_error; 
+               }
+               
+               function getException()
+               {
+                       return $this->error;    
+               }
+       }
+       
+       function ThrowException()
+       {
+               throw new MyException("'This is an exception!'");       
+       }
+       
+       
+       try {
+       } catch (MyException $exception) {
+               print "There was an exception: " . $exception->getException();
+               print "\n";
+       }
+       
+       try {
+               ThrowException();       
+       } catch (MyException $exception) {
+               print "There was an exception: " . $exception->getException();
+               print "\n";
+       }
+       
+?>
+
+Example 8: __clone()
+===================
+
+<?
+       class MyCloneable {
+               static $id = 0;
+               
+               function MyCloneable()
+               {
+                       $this->id = self::$id++;
+               }
+               
+               function __clone()
+               {
+                       $this->name = $clone->name;
+                       $this->address = "New York";
+                       $this->id = self::$id++;
+               }
+       }
+       
+
+       
+       $obj = new MyCloneable();
+
+       $obj->name = "Hello";
+       $obj->address = "Tel-Aviv";
+       
+       print $obj->id;
+       print "\n";
+       
+       $obj = $obj->__clone();
+       
+       print $obj->id;
+       print "\n";
+       print $obj->name;
+       print "\n";
+       print $obj->address;
+       print "\n";
+?>
+
+Example 9: Unified constructors
+===============================
+
+<?
+
+       class BaseClass {
+               function __construct()
+               {
+                       print "In BaseClass constructor\n";     
+               }
+       }
+       
+       class SubClass extends BaseClass {
+               function __construct()
+               {
+                               parent::__construct();
+                               print "In SubClass constructor\n";      
+               }
+       }
+       
+       $obj = new BaseClass();
+       
+       $obj = new SubClass();
+       
+?>
+
+Example 10: Destructors
+=======================
+
+<?php
+
+class MyDestructableClass {
+       function __construct()
+       {
+               print "In constructor\n";
+               $this->name = "MyDestructableClass";
+       }       
+       
+       function __destruct()
+       {
+               print "Destroying " . $this->name . "\n";
+       }       
+}
+
+$obj = new MyDestructableClass();
+
+?>