how can I send push notification to my web site users?

Dear Experts,

I want to send push notification to my web site users.
I use below instructions,
https://developers.google.com/web/ilt/pwa/lab-integrating-web-push

I follow this instructions and it gives me cURL Command to Send Push.

How can I send push notification using this cURL command? I'm using PHP.

the curl header is like below

curl --header "Authorization: key=AIzaSyAkNlKdxEhuTS-g8vxrIr-WQ" --header Content-Type:"application/json" https://android.googleapis.com/gcm/send -d "{\"registration_ids\":[\"dbqyF2_Q:APA910YmC4v_Ycy1u_vqR-Jrd8LccZBuKtHCQQ8WQ6QeY5IvTDfq4M4julIa-8515j1vKbb9sspcubuJD650Rpvw4oJ\"]}"

thank you
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BRMarketingAsked:
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Eddie ShipmanAll-around developerCommented:
Are you using the GCM push? If so, see the code here: https://stackoverflow.com/questions/11242743/gcm-with-php-google-cloud-messaging

Or this Google Cloud Push Messaging PHP Server Class: https://github.com/mattg888/GCM-PHP-Server-Push-Message
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BRMarketingAuthor Commented:
thank you Eddie Shipman
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