PHP 5, PHP/Java Bridge & Apache on XP PRO + SP2 and examples

Posted : Tue 18/07/2006
Updated: Thu 16/04/2007

Tested Environment

• php-5.1.6-Win32.zip
• apache_2.0.59-win32-x86-no_ssl.msi*
• php-java-bridge_3.2.1_j2ee.zip
• jdk-1_5_0_10-windows-i586-p.exe
• Windows XP Pro + SP2

*Add-in modules for Apache 1.3x or 2.0.x are not compatible with Apache 2.2.x. If you are running PHP 5.x, you must use the Apache version 2.0.x.

Installed Directories

• C:\PHP
• C:\Program Files\Apache Group\Apache2
• C:\Program Files\Java\jdk1.5.0_10*

Java

1. Make sure you set Environment Variables for Java (CLASSPATH and PATH). It looks like;
   

   CLASSPATH = .
   JAVA_HOME = C:\Program Files\Java\jdk1.5.0_10
   PATH = %PATH%;%JAVA_HOME%\bin
   

   
   

Apache HTTP Server

1. In general, it's simple to install. I installed the Apache HTTP Server for the localhost (127.0.0.1) on Port 80 (default).

   

2. To allow the Apache HTTP Server to by pass Windows Firewall, click Unblock.

   

3. To install PHP as an Apache module, add these lines to your Apache2 httpd.conf file (C:\Program Files\Apache Group\conf):
   
   

   # For PHP 5 do something like this:
   LoadModule php5_module "c:/php/php5apache2.dll"
   AddType application/x-httpd-php .php
   
   # For syntax highlighted .phps files, also add
   AddType application/x-httpd-php-source .phps
   
   # configure the path to php.ini
   PHPIniDir "C:/php"
   

   

PHP 5 & Java Bridge

1. You may use some sort of tools to unzip the php-java-bridge_3.2.1_j2ee.zip file. I used ALZip.
2. Copy JavaBridge.jar from the JavaBridge.war to C:\PHP\ext.

   

3. Copy java-x86-windows.dll from the JavaBridge.war to C:\PHP\ext.

   

4. Rename java-x86-windows.dll (from C:\PHP\ext) to php_java.dll

   

5. To set up a valid configuration file for PHP, make a copy of php.ini-recommended then rename it to the php.ini.

   

6. Edit the php.ini so that the "extension_dir" points to your PHP 5 extension directory.

     
   ...
   extension_dir = C:\php\ext
   
   extension = php_java.dll
   ...
   

   

   

   

Test & Examples

1. Open Notepad, then type (phpinfo.php)
   
   

   <?php
   
   phpinfo(); 
   
   ?>
   

2. Save it as phpinfo.php into C:\Program Files\Apache Group\Apache2\htdocs\test.
3. Open http://localhost/test/phpinfo.php in your web browser.

   

   

4. Example - java1.php

   <?php
   
   // get instance of Java class java.lang.System in PHP
   $system = new Java('java.lang.System');
   
   // demonstrate property access
   echo 'Java version=' . $system->getProperty('java.version') . '<br/>';
   echo 'Java vendor=' . $system->getProperty('java.vendor') . '<br/>';
   echo 'OS=' . $system->getProperty('os.name') . ' ' .
                $system->getProperty('os.version') . ' on ' .
                $system->getProperty('os.arch') . ' <br/>';
   
   // java.util.Date example
   $formatter = new Java('java.text.SimpleDateFormat',
                        "EEEE, MMMM dd, yyyy 'at' h:mm:ss a zzzz");
   
   echo $formatter->format(new Java('java.util.Date'));
   
   ?>
   
   

   

5. Example - HelloWorld.java

   
   public class HelloWorld {
   	String hw = "Hello World";
   
   	public String getHelloWorld() {
   		return hw;
   	}
   }
   
   

6. To compile a java source file, type "javac HelloWorld.java"
7. To create a JAR file from the class file, type "jar cvf HelloWorld.jar HelloWorld.class".

   

8. Copy the HelloWorld.jar file into the C:\Program Files\Apache Group\Apache2\htdocs\test directory.

   

9. Code the following, and save it as helloworld.php in C:\Program Files\Apache Group\Apache2\htdocs\test.

   <?php
   
   java_require('http://localhost/test/HelloWorld.jar');
   $myObj = new Java('HelloWorld');
   
   // display Hello World
   echo (String) $myObj->getHelloWorld();
   
   ?>
   

10. Open http://localhost/test/helloworld.php in your Web browser.

    

More Examples

1. Example - Config.java & config.php

   C:\Program Files\Apache Group\Apache2\htdocs\Config.java.

   public class Config
   {
   	private String dbHost = "myhost";
   	private String dbUser = "myuser";
   	private String dbPass = "mypass";
   	private String dbName = "mydb";
   
   	// constructor
   	public Config()
   	{}
   
   	// constructor
   	public Config(String host, String user, String pass, String name)
   	{
   		dbHost = host;
   		dbUser = user;
   		dbPass = pass;
   		dbName = name;
   	}
   
   	public String getDbHost()
   	{
   		return dbHost;
   	}
   
   	public String getDbUser()
   	{
   		return dbUser;
   	}
   
   	public String getDbPass()
   	{
   		return dbPass;
   	}
   
   	public String getDbName()
   	{
   		return dbName;
   	}
   }
   

   C:\temp\javac Config.java
   C:\temp\jar cvf Config.jar Config.class
   C:\Program Files\Apache Group\Apache2\htdocs\test\Config.jar

   C:\Program Files\Apache Group\Apache2\htdocs\test\config.php.

   <?
   
   java_require('http://localhost/test/Config.jar');
   
   $myObj = new Java("Config");
   
   echo (string) $myObj->getDbHost() . '<br/>';
   echo (string) $myObj->getDbUser() . '<br/>';
   echo (string) $myObj->getDbPass() . '<br/>';
   echo (string) $myObj->getDbName();
   
   ?>
   

   

2. Example - Config1.java & config1.php

   C:\Program Files\Apache Group\Apache2\htdocs\test\Config1.java.

   public class Config1
   {
   	private String dbHost = ""; 
   	private String dbUser = ""; 
   	private String dbPass = ""; 
   	private String dbName = "";
   
   	// constructor
   	public Config1()
   	{}
   
   	// constructor
   	Config1(String host, String user, String pass, String name)
   	{
   		dbHost = host;
   		dbUser = user;
   		dbPass = pass;
   		dbName = name;
   	}
   
   	public String getDbHost()
   	{
   		return dbHost;
   	}
   
   	public void setDbHost(String host)
   	{
   		dbHost = host;
   	}
   
   	public String getDbUser()
   	{
   		return dbUser;
   	}
   
   	public void setDbUser(String user)
   	{
   		dbUser = user;
   	}
   
   	public String getDbPass()
   	{
   		return dbPass;
   	}
   
   	public void setDbPass(String pass)
   	{
   		dbPass = pass;
   	}
   
   	public String getDbName()
   	{
   		return dbName;
   	}
   
   	public void setDbName(String name)
   	{
   		dbName = name;
   	}
   }
   
   

   C:\Program Files\Apache Group\Apache2\htdocs\test\config1.php.

   <?php
   
   // config1.php
   
   java_require('http://localhost/test/Config1.jar');
   
   $myObj = new Java("Config1");
   
   $myObj->setDbHost("localhost");
   $myObj->setDbUser("sk33");
   $myObj->setDbPass("abcd");
   $myObj->setDbName("test");
   
   echo (string) $myObj->getDbHost() . '<br/>';
   echo (string) $myObj->getDbUser() . '<br/>';
   echo (string) $myObj->getDbPass() . '<br/>';
   echo (string) $myObj->getDbName();
   
   ?>
   

   

3. Example - SalesTax.java, salestax.php, salestax.htm

   C:\Program Files\Apache Group\Apache2\htdocs\test\SalesTax.java.

   import java.util.*;
   import java.text.*;
   
   public class SalesTax
   {
   
       private double tax = 0.0;
       private double price = 0.0;
       private double salesTax = 0.0;
   
       public SalesTax()
       {}
   
       public String SalesTax(double price, double salesTax)
       {
           tax = price * salesTax;
   
           NumberFormat nf = null;
   
           nf = NumberFormat.getCurrencyInstance();
   
           String priceOut = nf.format(price);
           String taxOut = nf.format(tax);
   
           nf = NumberFormat.getPercentInstance();
           String salesTaxOut = nf.format(salesTax);
   
           String str = "Sales Tax of " + salesTaxOut +
               " on " + priceOut + " equals " + taxOut + ".";
   
           return str;
       }
   }
   

   C:\Program Files\Apache Group\Apache2\htdocs\test\salestax.php

   <?php
   
   if (isset($_POST["submit"]))
   {
   	java_require('http://localhost/test/SalesTax.jar');
   
   	$salesTax = new Java("SalesTax");
   
   	$price = (double) $_POST["price"];
   	$tax = (double) $_POST["tax"];
   
   	echo (String) $salesTax->SalesTax($price, $tax);
   }
   
   ?>
   

   C:\Program Files\Apache Group\Apache2\htdocs\test\salestax.htm.

   <html>
   <head>
   <title></title>
   </head>
   <body>
   
   <form action="salestax.php" method="post">
   Price: ($)<br/>
   <input type="text" name="price" size="15" maxlength="15"><br/>
   Tax Rate: (0.1 for 10%)<br/>
   <input type="text" name="tax" size="15" maxlength="15"><br/>
   <input type="submit" name="submit" value="Calculate!">
   </form>
   
   </body>
   </html>
   

   

   

Sample Files

• Config.java
• config.php
• Config1.java
• config1.php
• HelloWorld.java
• helloworld.php
• java1.php
• php.ini
• phpinfo.php
• SalesTax.java
• SalesTax.php
• salestax.htm

References

1. PHP - install.txt
2. PHP/Java Bridge - INSTALL.WINDOWS & INSTALL.J2EE
3. PHP4 - Java integration on Win32 and examples

Copyright © 2001-2007. Kang, S. Information Systems. University of Wollongong. Australia. All rights reserved.