Let's start with updating php 7.4 in xampp

What you all need ?

Xampp ( Installed) PHP version 7.4 complied file

# Next Steps to follow

Step one click the link to get latest version of php

Select VC15 x64 Non Thread Safe (2020-Nov-24 15:08:39) In that click on zip file (24.85MB) to download

Wait for while it's downloading

After Download Goto Download folder and you will get zip file named as (php-7.4.13-Win32-vc15-x64.zip).

Extract the files in Desktop or wherever you need

After Extraction now goto xampp folder here you will get folder of php rename the file php -> php_old or whatever you choose to

Now goto the folder where you extracted the all files and select all the files and copy

After selecting goto xampp folder and create new folder as php Next->goto php folder and paste the all files there

Now run Xampp Application

In Apache row select config

Under config -> select (Apache httpd-xampp-conf)

Open it notepad to edit the file In that you should change three line

 LoadFile "C:/xampp/php/php5ts.dll"  ->  LoadFile "C:/xampp/php/php7ts.dll"
LoadFile "C:/xampp/php/libpq.dll" -> LoadFile "C:/xampp/php/libpq.dll"
LoadModule php7_module "C:/xampp/php/php5apache2_4.dll" ->LoadModule php7_module "C:/xampp/php/php7apache2_4.dll"