phantomjs page.evaluate to scrape "resultStats" from http://www.google.com/search?q=site:%s works in local server but not production server - screen-scraping

Question

Using phantomjs page.evaluate to extract "resultStats" (div id) from http://www.google.com/search/?q=site:%s works on my local server but not on production server.
NOTE: I'm using the latest phantomjs 1.9.7, however I experienced the same issue with the previous version 1.9.6
NOTE: Phantomjs page.render (on Google home page as well as any other domain name) is working on both servers and creates nice screenshots.
On my production server (Debian stable 7.3 #linode.com) the PHP code below for a top level domain name as the "$url" returns:
TypeError: 'null' is not an object (evaluating 'document.getElementById('resultStats').textContent') phantomjs://webpage.evaluate():2 phantomjs://webpage.evaluate():3 phantomjs://webpage.evaluate():3 null
On my local server (debian testing) the PHP code below for the same "$url" returns:
About 43 results
This happens with any domain name/url I use as the argument - I've tested it on dozens.
What might cause this to occur in my remote production server and not my local server?
gsiteindex.js
var page = require('webpage').create(), site;
var site = phantom.args[0];
page.open("https://www.google.com/search?q=site:" + site, function (status) {
var result = page.evaluate(function () {
return document.getElementById('resultStats').textContent;
});
console.info(result);
phantom.exit();
});
.php
$phantomjs = "phantomjs";
$script = "gsiteindex.js";
$site = $url;
$command = "$phantomjs $script $site";
$googlestring = shell_exec($command);
echo $googlestring;
die();

Answer 1

Well, nrabinowitz was right. I tested it more on my own server using proxies, most timed out, some returned the above error, and a couple returned correct results (well I assume they were correct based on the location the IP address of the proxy - because the figures were a little different than using my ISPs public IP address (calif., USA)).
So it's simply a matter of google blocking certain types of requests from certain IP addresses.
Thanks again for the comment.

Answer 2

Incleude header with user-agent e.g.
header = {'user-asgent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64;
rv:68.0) Gecko/20100101 Firefox/68.0'}
Withuot user agent you get googles gefault style page without resultStats a also had this issue and adding header helped
Default google search page looks like this
enter image description here