php 与 java（二）

March 23,2004

例子1：创建和使用你自己的JAVA类
创建你自己的JAVA类非常容易。新建一个phptest.java文件，将它放置在你的java.class.path目录下，文件内容如下：

public class phptest{
/**
* A sample of a class that can work with PHP
* NB: The whole class must be public to work,
* and of course the methods you wish to call
* directly.
*
* Also note that from PHP the main method
* will not be called
*/

public String foo;

/**
* Takes a string and returns the result
* or a msg saying your string was empty
*/
public String test(String str) {
if(str.equals("")) {
str = "Your string was empty. ";
}
return str;
}

/**
* whatisfoo() simply returns the value of the variable foo.
*/
public String whatisfoo() {
return "foo is " + foo;
}

/**
* This is called if phptest is run from the command line with
* something like
* java phptest
* or
* java phptest hello there
*/
public static void main(String args[]) {
phptest p = new phptest();

if(args.length == 0) {
String arg = "";
System.out.println(p.test(arg));
}else{
for (int i=0; i < args.length; i++) {
String arg = args;
System.out.println(p.test(arg));
}
}
}
}

创建这个文件后，我们要编译好这个文件，在DOS命令行使用javac phptest.java这个命令。

为了使用PHP测试这个JAVA类，我们创建一个phptest.php文件，内容如下：