calling a web app using curl in php

Just the syntax to use in php for using curl and making a GET or POST request to a google apps script - a slight modification from the answer given here, as curl_close was not needed for us - 

$url = 'https://script.google.com/macros/s/ID_GOES_HERE/exec?optionname=OptionValue';
$schName = 'Some test';
$url = $url . urlencode($schName);
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl,CURLOPT_FOLLOWLOCATION, true);
$response = curl_exec($curl);
echo $response;