PHP code to Purge Cloudflare Cache

purge_cf.php

<?php
// Replace EMAIL/API_KEY/ZONE_ID with your details. 
// Zone ID is on the dashboard for the domain in the bottom right.
// Api keys are generated from the account settings. You must give cache purge permissions
// Place this script on your webserver and point a Github Webhook at it, and you'll clear 
// the Cloudflare cache every time you do a push to GH.

$zoneId = "xxx";
$apiKey = "xxx";
$email = "xxx";

// optional URL for individual URL purge
$file = 'https://example.com/style.css';

try {
    $head = [];
    $head[] = 'Content-Type: application/json';
    $head[] = "X-Auth-Email: $email";
    $head[] = "X-Auth-Key: $apiKey";
    $head[] = 'cache-control: no-cache';

    $url = "https://api.cloudflare.com/client/v4/zones/$zoneId/purge_cache";
    // You can also purge files like:
    //$purge = ['files' => [$file];

    $purge = ['purge_everything' => true];
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "DELETE");
    curl_setopt($ch, CURLOPT_HTTPHEADER, $head);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($purge));
    $result = curl_exec($ch);
    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);
} catch (Exception $e) {
    print($e);
}

@Greg-Boggs

Please correct from file = 'https://example.com/style.css'; to $file = 'https://example.com/style.css';

Fixed

Thanks, this is useful code.
But for some reason, I get an error when I use a custom API key with cache purge permissions:
{"success":false,"errors":[{"code":10000,"message":"Authentication error"}]}
But using the Global API key works:
{ "result": { "id": "zoneidzoneid" }, "success": true, "errors": [], "messages": [] }
Or is the "success" message returned not for the cache clearing?

I believe the true is for the cache clearing being successful. Not sure about the API key permissions and Cloudflare. However, whenever I work with CF, their support staff and X engagement folks have always been pretty responsive.