Set
PHP Manual

Ds\Set::first

Returns the first value in the set.

Description

public void Ds\Set::first ( void )

Returns the first value in the set.

Parameters

This function has no parameters.

Return Values

The first value in the set.

Errors/Exceptions

UnderflowException if empty.

Examples

Example #1 Ds\Set::first example

<?php
$set = new \Ds\Set([1, 2, 3]);
var_dump($set->first());
?>

The above example will output something similar to:

int(1)