echo "Empty stack , nothing to pop";
}
public function first()
{
return $this->stackArray[$this->index];
}
public function last()
{
return $this->stackArray[0];
}
public function GetElement($position)
{
if ($position <= $this->index + 1) {
$arrayposition = $this->index + 1 - $position;
return $this->stackArray[];
}
echo "invalid position", "<br>";
}
}
$mystack = new stack();
$mystack->push(1);
$mystack->push(4);
$mystack->push(5);
echo $mystack->first(), "<br>";
echo $mystack->last();
//$mystack->pop()
//echo $mystack->pop();
echo $mystack->pop();
//$mystack->pop();
echo $mystack->GetElement();
