我如何将这些值存储到一个Session PHP中

Question

I have this variable that contains multiple values and I want to save all the values into a $_SESSION['gamecode']. It displays only the last value.

$var=explode("|",$key);
    $gamecode=trim($var[0]);
session_start();
$gc[]= trim($var[0]);
$_SESSION['gamecode'][]=$gc;
var_dump($_SESSION['gamecode']);

EDITED

foreach($_POST['gm'] as $key => $answer){
    if($answer != ''){
    $var=explode("|",$key);
    $gamecode=trim($var[0]);
$_SESSION['gamecode'][]=$gc;
    var_dump($_SESSION['gamecode']);

EDIT 2

foreach($_POST['gm'] as $key => $answer){
        if($answer != ''){
        $var=explode("|",$key);
        $gamecode=trim($var[0]);
  }
    $_SESSION['gamecode'][]=$gc;
        var_dump($_SESSION['gamecode']);

Answer 1

i figured it out. by starting the Session in the foreach loop and calling it outside the loop. it works fine. Thanks

foreach($_POST['gm'] as $key => $answer){
        if($answer != ''){
        $var=explode("|",$key);
        $gamecode=trim($var[0]);
$gc[]= trim($var[0]);
$_SESSION['gamecode']=$gc;
  }



var_dump($_SESSION['gamecode']);