Question

Is it possible to integrate the two?

I found this example on the net, but it outputs a blank page. bash on its own is working and outputs Hello World!

bash with 0777 chmod
echo.txt

  #!/bin/bash
   echo "Hello World!"

PHP

<?php
$result=shell_exec("echo.txt");
echo($result);
?>

Answer 1

Specify the path to echo.txt, relative to the PHP script or absolute path, and make sure the script is executable.

$ chmod +x echo.txt

<?php
$result=shell_exec("./echo.txt");
echo($result);
?>

Without specifying the relative path, and running the PHP from the command line, the output was

sh: echo.txt: command not found

It will work properly with the path specified.