PHP Manual
Set
Returns the first value in the set

Ds\Set::first

(PECL ds >= 1.0.0)

Ds\Set::first — Returns the first value in the set

Description

public Ds\Set::first(): mixed

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)

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