You could try placing the index.php file you want to use as the main entry point of your application by putting it in the package.json file. Just replace the main property with your own URL.
package.json:
{
"name": "NodeTesting",
"description": "Used for node testing and developing scripts",
"version": "0.0.1",
"main": "http://localhost/launchjs/index.php",
"author": {
"name": "bytewarestudios",
"email": "admin@bytewarestudios.com"
},
"keywords": [],
"licenses": {
"type": "none"
},
"repository": {
"type": "git",
"url": "git://github.com//bytewarestudios"
},
"bugs": {
"url": "http://github.com//NodeTesting/issues"
}
}