The **`Stack::peek()` function** in PHP is used to get the reference of the element at the top of a stack.

Figure 1 shows the visual representation of the `Stack::peek()` function.

#     
## Syntax
```php
stack_name->peek()
## where the stack_name is the name of the stack
```
## Parameter
This function does not require a parameter.

## Return value
This function returns the `element` that is available at the top of the stack.
> It does not remove that element from the stack.

## Example


<?php
$stack = new \Ds\Stack();
#sending the list of elements 
$stack->push(1,3,5,2,0);
echo("Stack top element: ");
print_r($stack->peek());
?>	


## Output
```terminal
Stack top element: 0
```

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

Syntax

Parameter

Return value

Example

Output