[iKarim]

You can't use '==' in strings, use strcmp.

PHP код:

    new pName[MAX_PLAYER_NAME];
    GetPlayerName(playerid, pName, sizeof(pName));
    if(!strcmp(LandInfo[land][landOwner], pName))
    {
        // player names matches.
        
    } 


and your LandOwner variable should be like that

PHP код:

LandOwner[MAX_PLAYER_NAME]