cloudflare_test.php

<?php

$curl = curl_init();

curl_setopt ($curl, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt ($curl, CURLOPT_SSL_VERIFYPEER, 0); 

curl_setopt_array($curl, array(
  CURLOPT_URL => "https://api.cloudflare.com/client/v4/zones?status=active&match=all",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => array(
    "X-Auth-Email: YOUR_CLOUDFLARE_EMAIL",
    "X-Auth-Key: YOUR_GLOBAL_API_KEY",
    "cache-control: no-cache"
  ),
));

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}