我如何将这些值存储到一个Session PHP中

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']);

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']);

if you want all the values

$var=explode("|",$key);
$_SESSION['gamecode']=$var;

or just

$_SESSION['gamecode']=explode("|",$key);

currently your just storing the first one.

$var[0] is the first array element after the explode

So are you trying to have $_SESSION['gamecode'] be an array of piped values? Or $_SESSION['gamecode'] to be an array in and of itself?

It's not completely clear what you're trying to do here.

It looks like you've got piped values in $key, that you're making into array $var, and extracting the first value to $gamecode.

There's a lot of redundancy here, and you're not being explicit about what you want.

If you're trying to have $_SESSION['gamecode'] be an array with multiple values, you'd want to do something like

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

print_r($_SESSION['gamecode']);

Else if you want it to be a string of multiple values, it might be more fruitful to make $key a JSON string, no?

Not really enough details for me to give you a succinct answer.