即使变量是全局变量，变量也不能在PHP中的函数下工作

Question

I try to define variable and then call it in my function, and then i call the function in another file. So, the variables outside the function work properly, but when i call them in function they don't work. Here's the code.

$info = new ServerInfo($server->GetServerData('IPAdress'));
$id = $server->GetServerData('ID');
$sshhost = $server->GetServerData('SSHHOST');
$sshport = $server->GetServerData('SSHPORT');
$sshuser = $server->GetServerData('SSHUSER');
$sshpw = base64_decode(base64_decode($server->GetServerData('SSHPW')));
$port = $server->GetServerData('PORT');

/* Start Server Function */
function start_server($sshhost, $sshport, $sshuser, $sshpw){

global $sshhost;
global $sshport;
global $sshuser;
global $sshpw;
global $id;
global $port;

if (!function_exists("ssh2_connect")) return "SSH2 PHP extenzija nije instalirana";

if(!($con = ssh2_connect($sshhost, $sshport))){
    return "Ne mogu se spojiti na server";
} else {

    if(!ssh2_auth_password($con, $sshuser, $sshpw)) {
        return "Netačni podatci za prijavu";
    } else {

        $stream = ssh2_shell($con, 'vt102', null, 80, 24, SSH2_TERM_UNIT_CHARS);
        fwrite( $stream, "cd /home/cs && screen -A -m -S srv".$id. " ./hlds_run -console -game cstrike +port " .$port. " +map de_dust2 +maxplayers 32 -pingboost 1".PHP_EOL);
        sleep(1);
        echo "Server Startovan";

        return TRUE;

    }
}   
}

Answer 1

You can declare them using $GLOBALS['variablename'] then still use the $variablename in other function. ref: https://www.w3schools.com/php/php_superglobals.asp How to declare a global variable in php?

function start_server($sshhost, $sshport, $sshuser, $sshpw){

$GLOBALS['sshhost'] = $sshhost;
$GLOBALS['sshport'] = $sshport;
$GLOBALS['sshuser'] = $sshuser;
$GLOBALS['sshpw'] = $sshpw;

/* do more stuff */