} else {
echo "stack is empty";
}
}
public function isEmpty()
{
if ($this->index == -1) {
return true;
} else {
return false;
}
}
public function first()
{
echo $this->stackArray[$this->index];
}
public function last()
{
echo $this->stackArray[0];
}
}
$newStack = new Stack();
$newStack->push(2);
$newStack->push(6);
$newStack->pop();
$newStack->pop();
$newStack->pop();
$newStack->isEmpty();
$newStack->first();
$newStack->last();
$newStack->getElement(1);
$this->index--;
return $element;
}
echo "There is no element in the quee array";
}
public function isEmpty()
{
if ($this->index == -1) {
return true;
} else {
return false;
}
}
public function first()
{
return $this->queArray[$this->index];
}
public function last()
{
return $this->queArray[0];
}
}
$muy = new Stack(array(3, 4, 7));
$myStack = new Stack();
$myStack->push(1);
$myStack->push(4);
echo $myStack->first(), "<br>";
echo $myStack->last(), "<br>";
echo $myStack->pop(), "<br>";
echo $myStack->pop(), "<br>";
$myStack->pop();
