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POPHP putting an array within an array using variable
 

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    <p>I'm just wondering, is this correct? I can't find any guide for doing it this way, but I don't know how many elements regIds will have, so it seems like it needs to be done like this. regIds is the array. </p> <pre><code>$fields = array( 'registration_ids' =&gt; $regIds, 'data' =&gt; array( "message" =&gt; $message ), ); </code></pre> <p>Edit: full script with sensitive values omitted:</p> <pre><code>&lt;?php $name = $_POST['name']; $message = $_POST['message']; $latitude = $_POST['latitude']; $longitude = $_POST['longitude']; $url = "dburl"; $username = "dbusername"; $password = "password"; $db = "database"; mysql_connect($url, $username, $password); mysql_select_db($db); $sql = mysql_query("select chatId from Players natural join Accounts where account_state = 'O' and ABS(playerLat - '$latitude') &lt; 0.1 and ABS(playerLong - '$longitude') &lt; 0.1"); while($row = mysql_fetch_assoc($sql)) { $regIds[] = $row; } mysql_close(); $apiKey = "key"; // Set POST variables $urls = 'https://android.googleapis.com/gcm/send'; $fields = array( 'registration_ids' =&gt; $regIds, 'data' =&gt; array( "message" =&gt; $message ), ); $headers = array( 'Authorization: key=' . $apiKey, 'Content-Type: application/json' ); //Open connection $ch = curl_init(); // Set the url, number of POST vars, POST data curl_setopt( $ch, CURLOPT_URL, $urls ); curl_setopt( $ch, CURLOPT_POST, true ); curl_setopt( $ch, CURLOPT_HTTPHEADER, $headers); curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true ); curl_setopt( $ch, CURLOPT_POSTFIELDS, json_encode( $fields ) ); //Execute post $result = curl_exec($ch); // Close connection curl_close($ch); echo $result; ?&gt; </code></pre> <p>It doesn't return anything</p>
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    1. USfonduman
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    1. COThat's certainly valid PHP, if that's what you're asking. If you would rather have `$regIds` merged into the `$fields` array, you can use [array_merge](http://php.net/manual/en/function.array-merge.php).
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      1. USAlliterativeAlice
    2. COI think it needs to be like this to use google cloud messaging. Something isn't working, I thought this could be the issue. I'll look elsewhere in the code then, thanks.
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      1. USfonduman
    3. COAre you sure your SQL works? Usually with Joins, you'd need to add the table id like `SELECT table1.col1, table2.col1 FROM table1 JOIN table2 ...`. See docs, [Mysql Select](http://dev.mysql.com/doc/refman/5.0/en/select.html) or [column alias](http://dev.mysql.com/doc/refman/5.0/en/problems-with-alias.html)
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      1. USEdward Hew
 

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