Install PHP8.2 version on ubuntu18.04

Install PHP8.2 version on ubuntu18.04

1. Replace the domestic source and use the agent of the University of Science and Technology of China

/etc/apt/sources.list.d needs the warehouse address of the proxy,

• 1. Replace http://ppa.launchpad.net with https://launchpad.proxy.ustclug.org
• 2. Change http to https
  If there is no ppa source address in /etc/apt/sources.list, then search for ppa source address in /etc/apt/sources.list.d and replace it according to the search result

Step 1: Find the ppa source address

root@apig:/etc/apt/sources.list.d# find ./ | xargs grep "launchpad"

grep: ./: 是一个目录
./oisf-ubuntu-suricata-stable-bionic.list.save:deb http://ppa.launchpad.net/oisf/suricata-stable/ubuntu bionic main
./oisf-ubuntu-suricata-stable-bionic.list.save:# deb-src http://ppa.launchpad.net/oisf/suricata-stable/ubuntu bionic main
./ondrej-ubuntu-php-bionic.list:deb http://ppa.launchpad.net/ondrej/php/ubuntu bionic main
./ondrej-ubuntu-php-bionic.list:# deb-src http://ppa.launchpad.net/ondrej/php/ubuntu bionic main
./oisf-ubuntu-suricata-stable-bionic.list:deb http://ppa.launchpad.net/oisf/suricata-stable/ubuntu bionic main
./oisf-ubuntu-suricata-stable-bionic.list:# deb-src http://ppa.launchpad.net/oisf/suricata-stable/ubuntu bionic main
./ondrej-ubuntu-php-bionic.list.save:deb http://ppa.launchpad.net/ondrej/php/ubuntu bionic main
./ondrej-ubuntu-php-bionic.list.save:# deb-src http://ppa.launchpad.net/ondrej/php/ubuntu bionic main

Step 2, replace the source in turn

vi ./oisf-ubuntu-suricata-stable-bionic.list.save
vi ./oisf-ubuntu-suricata-stable-bionic.list

deb https://launchpad.proxy.ustclug.org/linuxuprising/shutter/ubuntu focal main
# deb-src https://launchpad.proxy.ustclug.org/linuxuprising/shutter/ubuntu focal main

Install php8.2

sudo apt install software-properties-common
sudo apt update
sudo apt install php8.2
php -v

install composer

 # 安装----安装时，请看以下说明
 apt install composer
 # 替换国内源
 composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/

Note: If you directly apt-get install composer, the php7 version of composer will be installed directly. When the higher version of PHP is updated, the composer update will show Command “self-update” is not defined

I am using the ubuntu18.04 version. The reason for this problem is that the composer in the ubuntu library cannot complete self-update.
So we have to remove the original composer first:

sudo apt-get remove composer

After the removal is successful, download composer in the official way of composer:

curl -sS https://getcomposer.org/installer | php

And move the downloaded composer.phar to the directory specified by the following command, so that all users can use composer globally:

sudo mv composer.phar /usr/bin/composer
chmod +x /usr/local/bin/composer

Finish typing:

composer

You will get a new version of the complete composer, you can use it normally