How PHP calls Java code

How does PHP invoke Java code?
Novice Ask ~

Now there is a Java file, for example, it has this function
String Test (string s) {
String S2
Do something deal with data base
return S2;
}

There is also an HTML page, click on a button, want to get a string from the page to the Java function, the Java function returns the result, and then display.

I don't know if this information is useful: Now I'm using Wampsever.

How can I ask the front-desk PHP to call this Java function? Thanks a lot!


------Solution--------------------
Tomacat+apache have to be.

Then, your Java code should be embedded in it!

And then using PHP to call through the socket or curl,

It's supposed to be okay.
------Solution--------------------
1.PHP Curl calls Java Servlet
2.Java Write a webservice,php call

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