"C:\xampp\php\php.exe" "C:\MyProjects\WebDriverTests\index.php"

index.php

<?php
require_once('vendor/autoload.php');
$_SERVER['APPLICATION_ENV']='development';
$_SERVER['APPLICATION_URL_PREFIX']='development.';
StartSeleniumServer();
RunTests();

function RunTests()
{
    $tries=100;
    for ($i = 0; $i < $tries; $i++)
    {
        //Run a test
        //every 100ms check to see if a certain element is there.
        //If html element doesn't load within 5000ms stop the browser 
        //so you can look at what may of caused the issue.
    }
}

function StartSeleniumServer()
{
    $isSeleniumAlreadyRunning=false;
    exec("wmic process where name=\"java.exe\" get commandline",$output);
    foreach($output as $line)
    {
        if(strpos($line, "selenium-server-standalone") !== FALSE)
        {
            $isSeleniumAlreadyRunning=true;
            break;
        }
    }
    if(!$isSeleniumAlreadyRunning)
    {
        execInBackground("java -jar ".__DIR__."\selenium-server-standalone-2.52.0.jar > NUL");
        echo 'Selenium up and running in background';
    }
}

function execInBackground($cmd) { 
    if (substr(php_uname(), 0, 7) == "Windows"){ 
        pclose(popen("start /B ". $cmd, "r"));  
    } 
    else { 
        exec($cmd . " > /dev/null &");   
    } 
}