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[i];
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:
<?php
$myj = new Java("phptest");
echo "Test Results are <b>" . $myj->test("Hello World") . "</b>"
;;
$myj->foo = "A String Value"
echo "You have set foo to <b>";;;. $myj->foo . "</b><br>n"
echo "My java method reports: <b>" . $myj->whatisfoo() . "</b><br>n"
;;
?>
如果你得到这样的警告信息:java.lang.ClassNotFoundException error ,这就意味着你的phptest.class文件不在你的java.class.path目录下。
注意的是JAVA是一种强制类型语言,而PHP不是,这样我们在将它们融合时,容易导致错误,于是我们在向JAVA传递变量时,要正确指定好变量的类型。如:$myj->foo = (string) 12345678; or $myj->foo = "12345678"
这只是一个很小的例子,你可以创建你自己的JAVA类,并使用PHP很好的调用它!
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