本机PHP版本管理

sudo apt-get install -y software-properties-common

sudo add-apt-repository ppa:ondrej/php
sudo apt-get update

sudo apt-get install -y php5.6
sudo apt-get install -y php8.2

╭─wwf@SK-20210813IYED in ~
╰$ sudo update-alternatives --config php
There are 2 choices for the alternative php (providing /usr/bin/php).

  Selection    Path             Priority   Status
------------------------------------------------------------
  0            /usr/bin/php8.2   82        auto mode
* 1            /usr/bin/php5.6   56        manual mode
  2            /usr/bin/php8.2   82        manual mode

Press <enter> to keep the current choice[*], or type selection number: 0
update-alternatives: using /usr/bin/php8.2 to provide /usr/bin/php (php) in auto mode
╭─wwf@SK-20210813IYED in ~
╰$ php --version
PHP 8.2.2 (cli) (built: Feb  3 2023 09:35:38) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.2.2, Copyright (c) Zend Technologies
    with Zend OPcache v8.2.2, Copyright (c), by Zend Technologies