Fixing GCM 1000 message limit, help loop script - php

Question

I am using PHP to send GCM notification to users. Based on their token saved in SQL on server. But I have a limit of 1000 notifications at once to send,
this is my working code , now i need to edit it to loop the process, and send 5000 notification in sections, 1000 than 1000 etc.
Here is my PHP code, and a simple HTML I didn't post here,
<?php
$mysqlHost = "";
$mysqlUser = "";
$mysqlPwd = ";
$mysqlDbname = "";
class GCM {
function __construct(){}
public function send_notification($registatoin_ids,$data) {
// GOOGLE API KEY
define("GOOGLE_API_KEY","************");
$url="https://android.googleapis.com/gcm/send";
$fields=array(
"registration_ids"=>$registatoin_ids,
"data"=>$data,
);
//var_dump($fields);
$headers=array(
"Authorization: key=".GOOGLE_API_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_SSL_VERIFYPEER,false);
curl_setopt($ch,CURLOPT_POSTFIELDS,json_encode($fields));
$result_gcm=curl_exec($ch);
if($result_gcm===FALSE){
die("Curl failed: ".curl_error($ch));
}
curl_close($ch);
//echo $result_gcm;
}
}
// Create connection
$conn = mysqli_connect($mysqlHost, $mysqlUser, $mysqlPwd, $mysqlDbname);
// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
$result = $conn->query("SELECT * FROM users WHERE users_android_token IS NOT NULL AND users_android_token <> ''");
$android_tokens = array();
$x=0;
if ($result->num_rows > 0) {
// output data of each row
while($row = $result->fetch_assoc()) {
$android_tokens[] = $row["users_android_token"];
$x++;
}
} else {
echo "0 results";
}
$conn->close();
$title = $_POST['title'];
$msg = $_POST['message'];
$link = $_POST['link'];
if ($android_tokens != array()) {
$gcm=new GCM();
$data=array("title"=>$title,"description"=>$msg,"link"=>$link);
$result_android=$gcm->send_notification($android_tokens,$data);
}
?>

Answer 1

Rather than send notification by registrationId, why not using send notification by topic. You only need to make client subscribed to certain topic.
in GCM, you can send notification topic with this code :
function send_notification_topic($topicname, $message){
$url = 'https://android.googleapis.com/gcm/send';
$fields = array(
'to' => '/topics/' . $topicname,
'data' => $message
);
$headers = array(
'Authorization: key=AIzablablablayourServerKey',
'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($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));
$result = curl_exec($ch);
if($result === FALSE){
die('Curl failed : ' . curl_error($ch));
}
curl_close($ch);
return $result;
}

Answer 2

Use this code for divided your tokens .
if ($android_tokens != array()) {
$gcm = new GCM();
$data = array("title" => $title,"description" => $msg,"link" => $link);
//Divide array into 1000 tokens
$splitTokens = array_chunk($android_tokens, 1000);
//loop the array
//Obs: for looping notification may push slow
foreach($splitTokens as $tokens) {
$result_android = $gcm -> send_notification($tokens,$data);
}
}
For divide GCM may push the notification slow . it take up to 2 - 10 mins.