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# XVIII. Date and Time functions

# Introduction

These functions allow you to get the date and time from the server where your PHP scripts are running. You can use these functions to format the date and time in many different ways.

> Note: Please keep in mind that these functions are dependent on the locale settings of your server. Make sure to take daylight saving time and leap years into consideration when working with these functions.

# Requirements

No external libraries are needed to build this extension.

# Installation

There is no installation needed to use these functions; they are part of the PHP core.

# Runtime Configuration

This extension has no configuration directives defined in `php.ini`.

# Resource Types

This extension has no resource types defined.

# Predefined Constants

This extension has no constants defined.

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