KorsaR-ZN

class MyClass
{

   public function __call($method = null, $data = null)
   {
	   $parts = preg_split('/([A-Z][^A-Z]*)/', $method, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
	   $type  = array_shift($parts);
	
	   if ($type != 'get' && $type != 'set') {
		   return;
	   }
	
       $varName = strtolower(implode('_', $parts));

       switch ($type) {
           case 'set' :
               $this->$varName = $data;
           break;
		
           case 'get': 
              return isset($this->$varName) ? $this->$varName : null;
           break;
        }
	
	   return;
    }
}

<?php
fwrite(STDOUT, "Введите имя:\n");
$name = fgets(STDIN);

fwrite(STDOUT, "Введите возраст:\n");
$age= fgets(STDIN);

table1:
  id, key, email, text_id

table2:
  id, text

$arr = [
'user1' => '123',
'user2' => '124'
];

$login = trim($_POST['login']);

if (isset($users[$login ]) {
   $key = $login;
   $value = $users[$login];
} else {
  echo 'Нет нужного ключа в массиве';
}