Get MODx version number from GitHub Master branch and paste into Google Spreadsheet

Code.gs

function myFunction() {
  var response = UrlFetchApp.fetch("http://www.example.com/get-modx-latest-version.php");
   SpreadsheetApp.getActiveSheet().getRange('A1').setValue(response.getContentText());
}

get-modx-latest-version.php

<?php

header('Content-Type: text/plain');
$input = file_get_contents("https://raw.githubusercontent.com/modxcms/revolution/master/_build/build.xml");
preg_match('/"modx.core.version" value="([^"]*)"/i', $input, $output_array);

if ($output_array[1] == "") {
  echo "ERROR!";
} else {
  echo $output_array[1];  
}

?>

I couldn't find anything like an API that I could access to find out what the current version of MODx was, so I pulled this together quickly so I could include the current MODx version number in a Google Spreadsheet:

get-modx-latest-version.php

1. Go and get the raw content of the MODx Master branch build.xml file
2. Use a regular expression to find the version number.
3. Output the version number (and nothing else).

Code.gs

1. Add this to your Google Spreadsheet.
2. Set the cell reference and the URL for your page.
3. Set a trigger for this to run every time the page is opened.