Invoke Java in PHP

PHP and Java

Java is a very powerful programming tool, its extension library is also very useful, this tutorial, mainly on how to use PHP invoke powerful Java class library (classes). To facilitate your study, this tutorial will include Java installation and some basic examples.

Installation under Windows

Step One: Install the JDK, it's very easy, you just have to install it all the way to the carriage. Then do the following steps.

Add under Win9x: "path=%path%; C:\jdk1.2.2\bin "to the Autoexec.bat file

To join under nt/win2000 "; C:\jdk1.2.2\bin "to the environment variable.

This step is very important so that PHP can correctly find the Java class that needs to be invoked.

Step Two: Modify your php.ini file.

[Java]

Extension=php_java.dll

Java.library.path=c:\web\php4\extensions\

Java.class.path= "C:\web\php4\extensions\jdk1.2.2\php_java.jar;c:\myclasses"


Add Extension=php_java.dll to PHP.ini

And in [Java], set the Java.class.path to point to Php_java.jar, and if you use the new Java class, you should also deposit this path, and in this example we use the C:\myclasses directory.

Step three: Test the environment, create the following PHP file:

?

$system = new Java ("Java.lang.System");

Print "Java version=". $system->getproperty ("Java.version"). " \ n ";

Print "Java vendor=". $system->getproperty ("Java.vendor"). " \ n ';

Print "os=". $system->getproperty ("Os.name"). " ".

$system->getproperty ("Os.version"). "On".

$system->getproperty ("Os.arch"). " \ n ";

$formatter = new Java ("Java.text.SimpleDateFormat", "Eeee,"

MMMM dd, yyyy ' at ' h:mm:ss a zzzz ');

Print $formatter->format (new Java ("Java.util.Date")). " \ n ";

?>


If you install it correctly, you will see the following information:

Java version=1.2.2

Java Vendor=sun Microsystems Inc.

Os=windows 4.10 on x86

Wednesday, October at 10:22:45 AM-Standard time

In this way, we have successfully built a PHP runtime environment that can use Java classes, and we can start the course we're going to take.