将参数发送到 Java 程序，运行它并从 PHP 脚本获取输出

Question

I have the following project structure:

project
  |_____run_java.php
  |_____java_program.java

The java program has some input variable a , b , c . I need to send these variables from the PHP script and then run the java program.

The output in the java program is in the form of System.out.println(output); (Should I change it to return output; )?

I tried the following simple test script, even without any inputs but it doesn't work:

run_java.php :

<?php
echo shell_exec("javac java_program.java && java XYZ");

java_program.java :

class XYZ {
    public static void main(String args[]){
        System.out.println("Test");
    }
}

But when I open run_java.php the page is blank.

Answer 1

see this: https://www.php.net/manual/en/function.shell-exec.php

And, Try to keep the java file name and class name consistent.