Question

I have a problem relating my web project.

Previously when my professor ask me on doing a online judge application, I chose to implement it using php rather than Java servlet, as I thought java servlet quite complicated.

Then problem comes. For the online judge, I have to use a backend java program on the server to do the processing of user submitted codes. That is, each time a user submits something, php would call the java virtual machine and invokes the java application. However, to invoke the java application, my own way now is to use command line
popen(“start java -jar \”$FILE_ROOT/OnlineJudge.jar\””, “r”);

This works fine, but considering loading of java virtual machine, it is actually very slow and error prone. So I was wondering if there is any better ways for PHP to invoke local java programs on the server. Because later I found I still need to invoke more java from php.

Any idea would be appreciated. Thanks.

Answer 1

have you considered php-java bridge, this is quite useful, it uses XML to communicate between php and java.

You’ll need to start the JVM once and the bridge component will help with communication.

here are some examples, here you can find a simple example to connect php and java