PHP Manual
Vector
Returns the first value in the vector

Ds\Vector::first

(PECL ds >= 1.0.0)

Ds\Vector::first — Returns the first value in the vector

Description

public Ds\Vector::first(): mixed

Returns the first value in the vector.

Parameters

This function has no parameters.

Return Values

The first value in the vector.

Errors/Exceptions

UnderflowException if empty.

Examples

Example #1 Ds\Vector::first() example


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

The above example will output something similar to:

int(1)

Here you can write a comment

There are no comments available yet.

PHP

PHP cURL Tutorial: Using cURL to Make HTTP Requests

cURL is a powerful PHP extension that allows you to communicate with different servers using various protocols, including HTTP, HTTPS, FTP, and more. ...

Autor : TheMax
Category: PHP-Tutorials

Midjourney Tutorial - Instructions for beginners

There is an informative video about Midjourney, the tool for creating digital images using artificial intelligence, entitled "Midjourney tutorial in German - instructions for beginners" ...

Autor : Mike94
Category: KI Tutorials

Basics of views in MySQL

Views in a MySQL database offer the option of creating a virtual table based on the result of an SQL query. This virtual table can be queried like a normal table without changing the underlying data. ...