PHP - Oop Variables Or Array How To Return Variable

$notfications = ( blah blah ) ? : '';
then
if ($notificatiosn != blabla){
echo 'hey';
}

$notifications = function(){
do my stuff here
then return 'hey';
}

I think I might have already asked something similar, but...

my code has:

$ip = gethostbyaddr($_SERVER['REMOTE_ADDR']);
$host = $_SERVER['HTTP_HOST'];

my field header for "$host" is "VISITOR DOMAIN ADDRESS".  I'm not sure what I was thinking.  That's not possible to capture is it?  Last I read, and I think someone here told me, it is only possible to capture the IP and server name of the requesting computer?  the var $ip in my report, for instance, returns:

173-28-199-198.client.mchsi.com

if I visit the page, and that is the name of the server assigned to my ISP.  on PHP's doc page, there are the vars REMOTE_HOST and REMOTE_USER and I haven't tried those.  Their example does not list any return value for those vars.  what do they return?

Hi everyone

for my end of studies projects I decided to do a little e-commerce problem on the filter .. I use an ajax request at the click of the checkbox this goes to my controller which calls a method of my Model class but the concern is that .. if the array $ _POST ['brands'] has several elements then only the last one is returned to me? I thought I saw one day that if the same variable is in a url then the last value will be returned to me is for security but how can I do ... I have been there for too long .. and finally despair. . Help me please... :')

request payload:

brands%5B%5D=arai&brands%5B%5D=bell

reply :

<- prepare var_dump ()
object (PDOStatement) # 2 (1) {["queryString"] => string (73) "SELECT mark FROM articles WHERE categorie_article =? AND mark IN (?,?)"}

string (4) "arai" <- bind
string (4) "bell" <- bind

var_dump () of my fetchAll ()
array (2) {[0] => array (2) {["brand"] => string (4) "bell" [0] => string (4) "bell"} [1] => array (2 ) {["brand"] => string (4) "bell" [0] => string (4) "bell"}}
image_icon

since the last value taken into account is bell then I get two items of the bell brand from my bdd but no arai ...

<?php
require("../PHPMailer/class.phpmailer.php");
include 'includes.php';
        $mail = new PHPMailer;
        $subject = $_POST['subject'];
        $text = $_POST['newsletterBody'];
        $unsubscribe = "<br /><br /><br /><br />If you would no longer like to receive these emails, please <a href='removeemail.php'>Click Here</a> to unsubscribe.";
        $mail->IsSMTP();                                      // Set mailer to use SMTP
        $mail->Host = 'localhost';  // Specify main and backup server
        $mail->Port = '465';
        $mail->SMTPAuth = true;                               // Enable SMTP authentication
        $mail->Username = '****EMAIL ADDRESS****';                            // SMTP username
        $mail->Password = '****EMAIL PASSWORD*****';
        $mail->SMTPAuth = true;
        $mail->SMTPSecure = 'ssl';                            // Enable encryption, 'ssl' also accepted

        $mail->From = '****EMAIL ADDRESS****';
        $mail->FromName = '****NAME****';
        
        $mail->AddAddress('****EMAIL ADDRESS****', '****NAME****');
        
        $email = getEmail("", $DBH);
        
        
        foreach ($email as $newEmail)
                {
                    $addEmail = $newEmail['email_addr'];
                    $mail->AddAddress($addEmail);
                    $DBH = null;
                }
        

        $mail->AddReplyTo('****EMAIL ADDRESS****', '****NAME****');
    
        $mail->WordWrap = 50;                                 // Set word wrap to 50 characters
        $mail->IsHTML(true);                                  // Set email format to HTML

        $mail->Subject = $subject;
        $mail->Body    = $text . "<br /><br /><br /> To unsubscribe to this email please  <a href='www.raven-consult.com/newsletter_remove.php'>Click Here</a>";
        $mail->AltBody = $text;

        if(!$mail->Send()) {
           echo 'Message could not be sent.';
           echo 'Mailer Error: ' . $mail->ErrorInfo;
           exit;
        }
        
        
        echo "Message has been sent <a href='newsletter.php'>Return back</a>";

?>

function getEmail($inId, $DBH)
    {
        if (!empty($inId))
        {
            $blogstmt = $DBH->prepare("SELECT email_addr FROM newsletter_emails WHERE id = :userId");
            $blogstmt->bindParam(":userId", $inId);
            $blogstmt->execute();
            $postArray = $blogstmt->fetchAll(PDO::FETCH_ASSOC);
        }
        else
        {
            $blogstmt = $DBH->prepare("SELECT * FROM newsletter_emails");
            $blogstmt->execute();
            $postArray = array();
        
        $results = $blogstmt->fetchAll(PDO::FETCH_ASSOC);
        foreach($results as $row){
            $myPost = new nlEmails($row['id'], $row['email_addr'], $DBH);
            array_push($postArray, $myPost);
        }
        }
    
        
        
        return $postArray;
        $DBH = null;
    }
 
class nlEmails {
    public $id;
    public $email;
    
    function __construct($inId=null, $inEmail=null, $DBH)
    {
        if(!empty($inId))
        {
            $this->id = $inId;
        }
        if(!empty($inEmail))
        {
        $this->email = $inEmail;
        }
    }
}

    Array (
    	[data] => Array (
    		[0] => stdClass Object (
    			[id] => 439676913452345546787863523525
    			[name] => John Doe
    			[picture] => stdClass Object (
    				[data] => stdClass Object (
    					[is_e] =>
    					[url] => https://blah.com....
    				)
    			)
    		)
    		[1] => stdClass Object (
    			[id] => 56594790468026754634524674
    			[name] => Bob Barker
    			[picture] => stdClass Object (
    				[data] => stdClass Object (
    					[is_e] =>
    					[url] => https://blah.com....
    				)
    			)
    		)
    		[2]...etc etc...
    		[paging] => stdClass Object ( 
    			[cursors] => stdClass Object ( 
    				[before] => QWFMmhllXN5JH....Rk52QWc= 
    				[after] => WGHtdnNIwaDlRz....05RNB0E= 
    			) 
    		)
    	)
    )

    foreach($theReturnedArray['data'] as $rData) {
      $id = (isset($rData['id']) ? $rData['id'] : null);
      $name = (isset($rData['name']) ? $rData['name'] : null);

      echo $name . ' ' . $id . '<br />';
    } 

     foreach($graphObject['data'] as $rData) {
	echo $rData->id + '<br/>';
	echo '======================================<br/>';
     }