Mohammad Mahbubur Rahman ruman

Install PHP version 8.0

In order to install PHP version 8.0, first, open your Ubuntu Terminal and enter the following command in order to add the Ondrej PHP repository to your Ubuntu system (in case you have not done that already in the above chapter to install PHP 5.6).

$ sudo add-apt-repository ppa:ondrej/php

This repository contains all the released versions of PHP till date.

Once the Ondrej repository is added, you need to update your system’s repository with that on the internet. This way you can install the latest available version of a software on your system. Enter the following command in order to do so:

	version: '3.7'

	services:
	simple_react:
	container_name: simple_react
	# image: node:11.9.0-alpine
	image: node:12.16.2-alpine
	volumes:
	- type: bind
	source: ./

	<?php

	if (!function_exists('dd')) {
	function dd($data)
	{
	ini_set("highlight.comment", "#969896; font-style: italic");
	ini_set("highlight.default", "#FFFFFF");
	ini_set("highlight.html", "#D16568");
	ini_set("highlight.keyword", "#7FA3BC; font-weight: bold");
	ini_set("highlight.string", "#F2C47E");

	function wp_mime_types($mimes) {
	$mimes['svg'] = 'image/svg+xml';
	return $mimes;
	}
	add_filter('upload_mimes', 'wp_mime_types');


	# BEGIN WordPress
	<IfModule mod_rewrite.c>
	RewriteEngine On
	RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
	RewriteBase /
	RewriteRule "^(.*/)?\.git/" - [F,L]
	RedirectMatch 404 /\.git
	RewriteRule ^index\.php$ - [L]
	RewriteCond %{REQUEST_FILENAME} !-f

	/*
	* e.g. A=1 - B=2 - Z=26 - AA=27 - CZ=104 - DA=105 - ZZ=702 - AAA=703
	*/
	function stringtointvalue($str)
	{
	$amount = 0;
	$strarra = array_reverse(str_split($str));

	for ($i = 0; $i < strlen($str); $i++) {
	$amount += (ord($strarra[$i]) - 64) * pow(26, $i);

	<?php
	/**
	* simple method to encrypt or decrypt a plain text string
	* initialization vector(IV) has to be the same when encrypting and decrypting
	*
	* @param string $action: can be 'encrypt' or 'decrypt'
	* @param string $string: string to encrypt or decrypt
	*
	* @return string
	*/

	Reoptimizing the loader class:
	php artisan optimize

	Clearing the cache
	php artisan cache:clear
	php artisan route:cache
	php artisan view:clear

	Clearing the config cache:
	php artisan config:cache

	301 moved permanently (redirect):
	<?php
	header('HTTP/1.1 301 Moved Permanently');
	header('Location: http://www.example.com');
	die();
	?>

	302 moved temporarily(redirect):
	<?php
	header('Location: http://www.example.com');

	/*--------------------------------------
	Woocommerce - Allow Guest Checkout on Certain products
	----------------------------------------*/

	// Display Guest Checkout Field
	add_action( 'woocommerce_product_options_general_product_data', 'woo_add_custom_general_fields' );
	function woo_add_custom_general_fields() {
	global $woocommerce, $post;

	echo '<div class="options_group">';