Implementing a function from another one - php

Question

this is my first post and im really new to php world, Sorry if i use wrong words or terms to describe my problem.
I have a script that was written in php for telegram, and i have two commands that is almost the same.
with this one it is possible to add to multiple groups using this separator ","
/madd
groupid, groupid
this one it is not possible to do
/wadd
groupid
I want to be able to use the second command with a separator between the group ids
I can see in the code how it is written to be able to do that in /madd but I cant figure out how to implement this in /wadd
I will put here the two scripts for the commands, would appreciate any help <3
Thanks.
This is the one with the separator
if(strpos($text,"/madd") === 0){
$e = explode("\n",$text);
if(!isset($e[1]) || !isset($e[2])) exit($bot->sendMessage($user['id'],"/madd\ntelegram_username or ID\ngroup, ids\nmax_posts per day (default 1)\nnumber of reposts (default 0)\n\nAdds new telegram username to the manual autodrop users list.\n\nReplace group_id with * to add to all groups"));
$group = $e[2]; $username = strtolower(ltrim($e[1],"#"));
$addto = [];
if($group == "*"){
$addto = $groups;
}else{
$ex = explode(",",$group);
foreach($ex AS $id){
$id = trim($id);
if(isset($groups[$id])){
$addto[$id] = $groups[$id];
}
}
}
$add = mysqli_fetch_assoc($conn->query("SELECT * FROM utenti WHERE username LIKE '%".mysqli_real_escape_string($conn,$username)."%'"));
if(!isset($add['id'])){
$add = mysqli_fetch_assoc($conn->query("SELECT * FROM utenti WHERE id = ".mysqli_real_escape_string($conn,$username)));
}
if(!isset($add['id'])){ exit($bot->sendMessage($user['id'],"😔 User $username not found! They need to start the bot, or send a simple message in one of the groups.")); }
$result = "❕ <b>Selected User:</b> <a href='tg://user?id=".$add['id']."'>".$add['username']." (".$add['id'].")</a>";
$manual = [
'max_posts' => $e[3] ?? 1,
'reposts' => $e[4] ?? 0,
'groups' => []
];
foreach($addto AS $id => $r){
$manual['groups'][] = $r['group_id'];
}
$conn->query("UPDATE utenti SET manual = '".mysqli_real_escape_string($conn,json_encode($manual,true))."' WHERE id = ".$add['id']);
$bot->sendMessage($user['id'],$result."\n\n".json_encode($manual,JSON_PRETTY_PRINT));
exit();
}
and this is without the separator
if(strpos($text,"/wadd") === 0){
$e = explode("\n",$text);
if(!isset($e[1]) || !isset($e[2])) exit($bot->sendMessage($user['id'],"/wadd\ngroup_id\ntelegram_username or ID\nmax_posts per day (default 5)\nnumber of reposts (default 0)\n\nAdds new telegram username to the whitelisted users list.\n\nReplace group_id with * to add to all groups"));
$group = $e[1]; $username = strtolower(ltrim($e[2],"#"));
if($group != "*" && !isset($groups[$group])) exit($bot->sendMessage($user['id'],"👥 <b>Group $group</b> not whitelisted."));
$add = mysqli_fetch_assoc($conn->query("SELECT * FROM utenti WHERE username LIKE '%".mysqli_real_escape_string($conn,$username)."%'"));
if(!isset($add['id'])){
$add = mysqli_fetch_assoc($conn->query("SELECT * FROM utenti WHERE id = ".mysqli_real_escape_string($conn,$username)));
}
if(!isset($add['id'])){ exit($bot->sendMessage($user['id'],"😔 User $username not found! They need to start the bot, or send a simple message in one of the groups.")); }
$result = "❕ <b>Selected User:</b> <a href='tg://user?id=".$add['id']."'>".$add['username']." (".$add['id'].")</a>";
$premiums = json_decode($add['premiums'],true);
if(!is_array($premiums)) $premiums = [];
$groups_to_update = []; if($group == "*"){ foreach($groups AS $group => $data){ $groups_to_update[] = $group; } }else{ $groups_to_update[] = "-".abs($group); }
$max_posts = $e[3] ?? 5; $reposts = $e[4] ?? 0;
foreach($groups_to_update AS $group_id){
if(isset($premiums[$group_id])){
if($premiums[$group_id]['max_posts'] == $max_posts && $premiums[$group_id]['reposts'] == $reposts){
$result.="\n\n🕐 <i>No changes for group</i> <code>$group_id</code>";
}else{
$result.="\n\n♻️ <b>Updated</b> for group <code>$group_id</code>\nMax. Posts: $max_posts | Reposts: $reposts";
$premiums[$group_id] = ['max_posts' => $max_posts,'reposts' => $reposts];
}
}else{
$result.="\n\n➕ <b>Added</b> for group <code>$group_id</code>\nMax. Posts: $max_posts | Reposts: $reposts";
$premiums[$group_id] = ['max_posts' => $max_posts,'reposts' => $reposts];
}
}
$conn->query("UPDATE utenti SET premiums = '".mysqli_real_escape_string($conn,json_encode($premiums,true))."' WHERE id = ".$add['id']);
$bot->sendMessage($user['id'],$result);
exit();
}