The **`Stack::isEmpty()` function** in PHP is used to check if a stack is empty. `Stack::isEmpty()` returns `true` if the stack is empty. Otherwise, it returns `false`. 

The illustration below shows a visual representation of the `Stack::isEmpty()` function.


# 
## Syntax

```php
stack_name->isEmpty()
## where the stack_name is the name of the stack
```

## Parameter
The `Stack::isEmpty()` function does not require any parameters.

## Return value

The `Stack::isEmpty()` function returns `true` (`1`) if the queue is empty. Otherwise, it returns `false`.


## Code


<?php
$stack1 = new \Ds\Stack();
#sending the list of elements 
$stack1->push(1,3,5,2,0);
echo("Stack1 is empty: ");
echo($stack1->isEmpty());

$stack2 = new \Ds\Stack();
echo("\nStack2 is empty: ");
echo($stack2->isEmpty());
?>	


## Output
```terminal
Stack1 is empty:
Stack2 is empty: 1
```

What is Ds\Stack::isEmpty() in PHP?

Checks if a stack in PHP is empty, returning true if empty and false otherwise.