Added php example using google's Firebase endpoint

android/firebasetest

@@ -0,0 +1,41 @@
+#!/usr/bin/php
+<?php
+function sendGCM($message, $id) {
+
+
+    $url = 'https://fcm.googleapis.com/fcm/send';
+
+    $fields = array (
+            'registration_ids' => array (
+                    $id
+            ),
+            "data"    => [
+			    "data"  => [
+			      "alert"     => "Testing " . time(),
+			      "title"     => "The title",
+			      "vibrate"   => [100,50,50,50,100],
+			      "badge"     => 1,
+			      "tag"       => "APP"
+			    ]
+			  ]
+    );
+    $fields = json_encode ( $fields );
+
+    $headers = array (
+            'Authorization: key=' . "<AUTH KEY>",
+            'Content-Type: application/json'
+    );
+
+    $ch = curl_init ();
+    curl_setopt ( $ch, CURLOPT_URL, $url );
+    curl_setopt ( $ch, CURLOPT_POST, true );
+    curl_setopt ( $ch, CURLOPT_HTTPHEADER, $headers );
+    curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, true );
+    curl_setopt ( $ch, CURLOPT_POSTFIELDS, $fields );
+
+    $result = curl_exec ( $ch );
+    echo $result;
+    curl_close ( $ch );
+}
+
+sendGCM("Test", "DEVICE TOKEN");