如何安裝php7？

Question

由於php7已經發布，我想在我當前的機器上試用它。

我嘗試使用這個要點從源代碼構建它但是對我來說失敗了（我在帖子中發布了錯誤消息 ）。

然而問題不一定是解決編譯問題，而是更基本的問題：

我該如何安裝php7？

我在Ubuntu14.04上，但我希望答案是與操作系統無關的。

Answer 1

要在ubuntu 14.04系統中安裝php7，請按照以下步驟操作：

sudo add-apt-repository ppa:ondrej/php
sudo apt-get update
sudo apt-get install php7.0

使用mysql

sudo apt-get install php7.0-mysql
sudo service apache2 restart

---

如果你想刪除php5然后安裝php7后按照下面提到的步驟：

sudo apt-get update
sudo apt-get purge php5-common -y
sudo apt-get install php7.0 php7.0-fpm php7.0-mysql -y
sudo apt-get --purge autoremove -y

Answer 2

我在https://jaimemontoya.com/learning-php-7/#20190807165248上分享了我在Ubuntu 18.04.1上安裝PHP V7.0.33-8的方式。 我還發布了成功安裝后返回的<?php phpinfo();?>的截圖。 請參閱下面的步驟：

root@jaimemontoya:/# pwd
/
root@jaimemontoya:/# apt-add-repository ppa:ondrej/php
 Co-installable PHP versions: PHP 5.6, PHP 7.x and most requested extensions are included. Only Supported Versions of PHP (http://php.net/supported-versions.php) for Supported Ubuntu Releases (https://wiki.ubuntu.com/Releases) are provided. Don't ask for end-of-life PHP versions or Ubuntu release, they won't be provided.

Debian oldstable and stable packages are provided as well: https://deb.sury.org/#debian-dpa

You can get more information about the packages at https://deb.sury.org

BUGS&FEATURES: This PPA now has a issue tracker:
https://deb.sury.org/#bug-reporting

CAVEATS:
1. If you are using php-gearman, you need to add ppa:ondrej/pkg-gearman
2. If you are using apache2, you are advised to add ppa:ondrej/apache2
3. If you are using nginx, you are advise to add ppa:ondrej/nginx-mainline
   or ppa:ondrej/nginx

PLEASE READ: If you like my work and want to give me a little motivation, please consider donating regularly: https://donate.sury.org/

WARNING: add-apt-repository is broken with non-UTF-8 locales, see 
https://github.com/oerdnj/deb.sury.org/issues/56 for workaround:

# LC_ALL=C.UTF-8 add-apt-repository ppa:ondrej/php
 More info: https://launchpad.net/~ondrej/+archive/ubuntu/php
Press [ENTER] to continue or Ctrl-c to cancel adding it.

Hit:1 http://ppa.launchpad.net/certbot/certbot/ubuntu bionic InRelease
Hit:2 http://archive.ubuntu.com/ubuntu bionic InRelease                                                        
Hit:3 http://us.archive.ubuntu.com/ubuntu bionic InRelease                                                                         
Get:4 http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]                                                       
Get:5 http://us.archive.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]                                  
Get:6 http://ppa.launchpad.net/ondrej/php/ubuntu bionic InRelease [20.8 kB]         
Get:7 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages [697 kB]
Get:8 http://us.archive.ubuntu.com/ubuntu bionic-updates/restricted amd64 Packages [7,024 B]
Get:9 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages [983 kB]
Get:10 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe Translation-en [299 kB]
Get:11 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 Packages [11.9 kB]
Get:12 http://us.archive.ubuntu.com/ubuntu bionic-security/universe amd64 Packages [577 kB]
Get:13 http://us.archive.ubuntu.com/ubuntu bionic-security/universe Translation-en [189 kB]
Get:14 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 Packages [45.2 kB]     
Get:15 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main Translation-en [22.1 kB]
Fetched 3,029 kB in 2s (1,515 kB/s)         
Reading package lists... Done
root@jaimemontoya:/# apt-get update
Hit:1 http://us.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http://ppa.launchpad.net/certbot/certbot/ubuntu bionic InRelease
Hit:3 http://archive.ubuntu.com/ubuntu bionic InRelease                                        
Hit:4 http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease                                 
Hit:5 http://us.archive.ubuntu.com/ubuntu bionic-security InRelease                                
Hit:6 http://ppa.launchpad.net/ondrej/php/ubuntu bionic InRelease                                  
Reading package lists... Done
root@jaimemontoya:/# apt-get install php7.0 php7.0-fpm php7.0-mysql -y
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  libpcre3 php-common php7.0-cli php7.0-common php7.0-json php7.0-opcache php7.0-readline
Suggested packages:
  php-pear
The following NEW packages will be installed:
  php-common php7.0 php7.0-cli php7.0-common php7.0-fpm php7.0-json php7.0-mysql php7.0-opcache php7.0-readline
The following packages will be upgraded:
  libpcre3
1 upgraded, 9 newly installed, 0 to remove and 40 not upgraded.
Need to get 4,047 kB of archives.
After this operation, 14.6 MB of additional disk space will be used.
Get:1 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 libpcre3 amd64 2:8.43-1+ubuntu18.04.1+deb.sury.org+1 [237 kB]
Get:2 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 php-common all 2:69+ubuntu18.04.1+deb.sury.org+2+php7.3 [15.1 kB]
Get:3 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 php7.0-common amd64 7.0.33-8+ubuntu18.04.1+deb.sury.org+1 [897 kB]
Get:4 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 php7.0-json amd64 7.0.33-8+ubuntu18.04.1+deb.sury.org+1 [17.2 kB]
Get:5 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 php7.0-opcache amd64 7.0.33-8+ubuntu18.04.1+deb.sury.org+1 [79.1 kB]
Get:6 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 php7.0-readline amd64 7.0.33-8+ubuntu18.04.1+deb.sury.org+1 [12.6 kB]
Get:7 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 php7.0-cli amd64 7.0.33-8+ubuntu18.04.1+deb.sury.org+1 [1,300 kB]
Get:8 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 php7.0-fpm amd64 7.0.33-8+ubuntu18.04.1+deb.sury.org+1 [1,307 kB]
Get:9 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 php7.0 all 7.0.33-8+ubuntu18.04.1+deb.sury.org+1 [56.3 kB]
Get:10 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 php7.0-mysql amd64 7.0.33-8+ubuntu18.04.1+deb.sury.org+1 [125 kB]
Fetched 4,047 kB in 4s (916 kB/s)  
(Reading database ... 169946 files and directories currently installed.)
Preparing to unpack .../libpcre3_2%3a8.43-1+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking libpcre3:amd64 (2:8.43-1+ubuntu18.04.1+deb.sury.org+1) over (2:8.39-9) ...
Setting up libpcre3:amd64 (2:8.43-1+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package php-common.
(Reading database ... 169946 files and directories currently installed.)
Preparing to unpack .../0-php-common_2%3a69+ubuntu18.04.1+deb.sury.org+2+php7.3_all.deb ...
Unpacking php-common (2:69+ubuntu18.04.1+deb.sury.org+2+php7.3) ...
Selecting previously unselected package php7.0-common.
Preparing to unpack .../1-php7.0-common_7.0.33-8+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php7.0-common (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package php7.0-json.
Preparing to unpack .../2-php7.0-json_7.0.33-8+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php7.0-json (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package php7.0-opcache.
Preparing to unpack .../3-php7.0-opcache_7.0.33-8+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php7.0-opcache (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package php7.0-readline.
Preparing to unpack .../4-php7.0-readline_7.0.33-8+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php7.0-readline (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package php7.0-cli.
Preparing to unpack .../5-php7.0-cli_7.0.33-8+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php7.0-cli (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package php7.0-fpm.
Preparing to unpack .../6-php7.0-fpm_7.0.33-8+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php7.0-fpm (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package php7.0.
Preparing to unpack .../7-php7.0_7.0.33-8+ubuntu18.04.1+deb.sury.org+1_all.deb ...
Unpacking php7.0 (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package php7.0-mysql.
Preparing to unpack .../8-php7.0-mysql_7.0.33-8+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php7.0-mysql (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...
Processing triggers for ureadahead (0.100.0-21) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
Setting up php-common (2:69+ubuntu18.04.1+deb.sury.org+2+php7.3) ...
Created symlink /etc/systemd/system/timers.target.wants/phpsessionclean.timer → /lib/systemd/system/phpsessionclean.timer.
Processing triggers for systemd (237-3ubuntu10.22) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Setting up php7.0-common (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...

Creating config file /etc/php/7.0/mods-available/calendar.ini with new version

Creating config file /etc/php/7.0/mods-available/ctype.ini with new version

Creating config file /etc/php/7.0/mods-available/exif.ini with new version

Creating config file /etc/php/7.0/mods-available/fileinfo.ini with new version

Creating config file /etc/php/7.0/mods-available/ftp.ini with new version

Creating config file /etc/php/7.0/mods-available/gettext.ini with new version

Creating config file /etc/php/7.0/mods-available/iconv.ini with new version

Creating config file /etc/php/7.0/mods-available/pdo.ini with new version

Creating config file /etc/php/7.0/mods-available/phar.ini with new version

Creating config file /etc/php/7.0/mods-available/posix.ini with new version

Creating config file /etc/php/7.0/mods-available/shmop.ini with new version

Creating config file /etc/php/7.0/mods-available/sockets.ini with new version

Creating config file /etc/php/7.0/mods-available/sysvmsg.ini with new version

Creating config file /etc/php/7.0/mods-available/sysvsem.ini with new version

Creating config file /etc/php/7.0/mods-available/sysvshm.ini with new version

Creating config file /etc/php/7.0/mods-available/tokenizer.ini with new version
Setting up php7.0-mysql (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...

Creating config file /etc/php/7.0/mods-available/mysqlnd.ini with new version

Creating config file /etc/php/7.0/mods-available/mysqli.ini with new version

Creating config file /etc/php/7.0/mods-available/pdo_mysql.ini with new version
Setting up php7.0-readline (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...

Creating config file /etc/php/7.0/mods-available/readline.ini with new version
Setting up php7.0-opcache (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...

Creating config file /etc/php/7.0/mods-available/opcache.ini with new version
Setting up php7.0-json (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...

Creating config file /etc/php/7.0/mods-available/json.ini with new version
Setting up php7.0-cli (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...
update-alternatives: using /usr/bin/php7.0 to provide /usr/bin/php (php) in auto mode
update-alternatives: using /usr/bin/phar7.0 to provide /usr/bin/phar (phar) in auto mode
update-alternatives: using /usr/bin/phar.phar7.0 to provide /usr/bin/phar.phar (phar.phar) in auto mode

Creating config file /etc/php/7.0/cli/php.ini with new version
Setting up php7.0-fpm (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...

Creating config file /etc/php/7.0/fpm/php.ini with new version
NOTICE: Not enabling PHP 7.0 FPM by default.
NOTICE: To enable PHP 7.0 FPM in Apache2 do:
NOTICE: a2enmod proxy_fcgi setenvif
NOTICE: a2enconf php7.0-fpm
NOTICE: You are seeing this message because you have apache2 package installed.
Created symlink /etc/systemd/system/multi-user.target.wants/php7.0-fpm.service → /lib/systemd/system/php7.0-fpm.service.
Setting up php7.0 (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...
Processing triggers for ureadahead (0.100.0-21) ...
Processing triggers for systemd (237-3ubuntu10.22) ...
root@jaimemontoya:/# apt-get --purge autoremove -y
Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 40 not upgraded.
root@jaimemontoya:/# service php7.0-fpm start
root@jaimemontoya:/# php -v
PHP 7.0.33-8+ubuntu18.04.1+deb.sury.org+1 (cli) (built: May 31 2019 11:34:35) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies
    with Zend OPcache v7.0.33-8+ubuntu18.04.1+deb.sury.org+1, Copyright (c) 1999-2017, by Zend Technologies
root@jaimemontoya:/# apt purge libapache2-mod-php7.0 libapache2-mod-php
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package 'libapache2-mod-php' is not installed, so not removed
Package 'libapache2-mod-php7.0' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 40 not upgraded.
root@jaimemontoya:/# apt install libapache2-mod-php7.0 libapache2-mod-php
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  libapache2-mod-php7.3 libpcre2-8-0 libsodium23 php7.3-cli php7.3-common php7.3-json php7.3-opcache php7.3-readline
Suggested packages:
  php-pear
The following NEW packages will be installed:
  libapache2-mod-php libapache2-mod-php7.0 libapache2-mod-php7.3 libpcre2-8-0 libsodium23 php7.3-cli php7.3-common php7.3-json php7.3-opcache php7.3-readline
0 upgraded, 10 newly installed, 0 to remove and 40 not upgraded.
Need to get 5,439 kB of archives.
After this operation, 22.3 MB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 php7.3-common amd64 7.3.7-2+ubuntu18.04.1+deb.sury.org+1 [938 kB]
Get:2 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 php7.3-json amd64 7.3.7-2+ubuntu18.04.1+deb.sury.org+1 [18.4 kB]
Get:3 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 php7.3-opcache amd64 7.3.7-2+ubuntu18.04.1+deb.sury.org+1 [182 kB]
Get:4 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 php7.3-readline amd64 7.3.7-2+ubuntu18.04.1+deb.sury.org+1 [12.0 kB]
Get:5 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 libpcre2-8-0 amd64 10.33-1+ubuntu18.04.1+deb.sury.org+1 [191 kB]
Get:6 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 libsodium23 amd64 1.0.17-0.1+ubuntu18.04.1+deb.sury.org+1 [147 kB]
Get:7 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 php7.3-cli amd64 7.3.7-2+ubuntu18.04.1+deb.sury.org+1 [1,378 kB]
Get:8 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 libapache2-mod-php7.3 amd64 7.3.7-2+ubuntu18.04.1+deb.sury.org+1 [1,324 kB]
Get:9 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 libapache2-mod-php all 2:7.3+69+ubuntu18.04.1+deb.sury.org+2+php7.3 [6,244 B]
Get:10 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 libapache2-mod-php7.0 amd64 7.0.33-8+ubuntu18.04.1+deb.sury.org+1 [1,242 kB]
Fetched 5,439 kB in 5s (1,094 kB/s)               
Selecting previously unselected package php7.3-common.
(Reading database ... 170110 files and directories currently installed.)
Preparing to unpack .../0-php7.3-common_7.3.7-2+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php7.3-common (7.3.7-2+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package php7.3-json.
Preparing to unpack .../1-php7.3-json_7.3.7-2+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php7.3-json (7.3.7-2+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package php7.3-opcache.
Preparing to unpack .../2-php7.3-opcache_7.3.7-2+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php7.3-opcache (7.3.7-2+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package php7.3-readline.
Preparing to unpack .../3-php7.3-readline_7.3.7-2+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php7.3-readline (7.3.7-2+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package libpcre2-8-0:amd64.
Preparing to unpack .../4-libpcre2-8-0_10.33-1+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking libpcre2-8-0:amd64 (10.33-1+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package libsodium23:amd64.
Preparing to unpack .../5-libsodium23_1.0.17-0.1+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking libsodium23:amd64 (1.0.17-0.1+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package php7.3-cli.
Preparing to unpack .../6-php7.3-cli_7.3.7-2+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking php7.3-cli (7.3.7-2+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package libapache2-mod-php7.3.
Preparing to unpack .../7-libapache2-mod-php7.3_7.3.7-2+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking libapache2-mod-php7.3 (7.3.7-2+ubuntu18.04.1+deb.sury.org+1) ...
Selecting previously unselected package libapache2-mod-php.
Preparing to unpack .../8-libapache2-mod-php_2%3a7.3+69+ubuntu18.04.1+deb.sury.org+2+php7.3_all.deb ...
Unpacking libapache2-mod-php (2:7.3+69+ubuntu18.04.1+deb.sury.org+2+php7.3) ...
Selecting previously unselected package libapache2-mod-php7.0.
Preparing to unpack .../9-libapache2-mod-php7.0_7.0.33-8+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking libapache2-mod-php7.0 (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...
Setting up php7.3-common (7.3.7-2+ubuntu18.04.1+deb.sury.org+1) ...

Creating config file /etc/php/7.3/mods-available/calendar.ini with new version

Creating config file /etc/php/7.3/mods-available/ctype.ini with new version

Creating config file /etc/php/7.3/mods-available/exif.ini with new version

Creating config file /etc/php/7.3/mods-available/fileinfo.ini with new version

Creating config file /etc/php/7.3/mods-available/ftp.ini with new version

Creating config file /etc/php/7.3/mods-available/gettext.ini with new version

Creating config file /etc/php/7.3/mods-available/iconv.ini with new version

Creating config file /etc/php/7.3/mods-available/pdo.ini with new version

Creating config file /etc/php/7.3/mods-available/phar.ini with new version

Creating config file /etc/php/7.3/mods-available/posix.ini with new version

Creating config file /etc/php/7.3/mods-available/shmop.ini with new version

Creating config file /etc/php/7.3/mods-available/sockets.ini with new version

Creating config file /etc/php/7.3/mods-available/sysvmsg.ini with new version

Creating config file /etc/php/7.3/mods-available/sysvsem.ini with new version

Creating config file /etc/php/7.3/mods-available/sysvshm.ini with new version

Creating config file /etc/php/7.3/mods-available/tokenizer.ini with new version
Setting up libapache2-mod-php7.0 (7.0.33-8+ubuntu18.04.1+deb.sury.org+1) ...

Creating config file /etc/php/7.0/apache2/php.ini with new version
Module mpm_event disabled.
Enabling module mpm_prefork.
apache2_switch_mpm Switch to prefork
apache2_invoke: Enable module php7.0
Setting up php7.3-opcache (7.3.7-2+ubuntu18.04.1+deb.sury.org+1) ...

Creating config file /etc/php/7.3/mods-available/opcache.ini with new version
Setting up libsodium23:amd64 (1.0.17-0.1+ubuntu18.04.1+deb.sury.org+1) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Setting up php7.3-readline (7.3.7-2+ubuntu18.04.1+deb.sury.org+1) ...

Creating config file /etc/php/7.3/mods-available/readline.ini with new version
Setting up libpcre2-8-0:amd64 (10.33-1+ubuntu18.04.1+deb.sury.org+1) ...
Setting up php7.3-json (7.3.7-2+ubuntu18.04.1+deb.sury.org+1) ...

Creating config file /etc/php/7.3/mods-available/json.ini with new version
Setting up php7.3-cli (7.3.7-2+ubuntu18.04.1+deb.sury.org+1) ...
update-alternatives: using /usr/bin/php7.3 to provide /usr/bin/php (php) in auto mode
update-alternatives: using /usr/bin/phar7.3 to provide /usr/bin/phar (phar) in auto mode
update-alternatives: using /usr/bin/phar.phar7.3 to provide /usr/bin/phar.phar (phar.phar) in auto mode

Creating config file /etc/php/7.3/cli/php.ini with new version
Setting up libapache2-mod-php7.3 (7.3.7-2+ubuntu18.04.1+deb.sury.org+1) ...

Creating config file /etc/php/7.3/apache2/php.ini with new version
libapache2-mod-php7.3: php7.0 module already enabled, not enabling PHP 7.3
Setting up libapache2-mod-php (2:7.3+69+ubuntu18.04.1+deb.sury.org+2+php7.3) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
root@jaimemontoya:/#

更新1：

正如你所要求的那樣k0pernikus，它實際上是由Packt Publishing出版的Antonio Lopez在學習PHP 7的第1章中發表的：

安裝PHP

本節中唯一要考慮的是刪除系統上以前的所有PHP版本。 為此，您可以運行以下命令：

$ sudo apt-get -y purge php.*

下一步是添加必要的存儲庫以獲取正確的PHP版本。 添加和更新它們的命令是：

$ sudo apt-get install python-software-properties

$ sudo LC_ALL=en_US.UTF-8 add-apt-repository ppa:ondrej/php -y

$ sudo apt-get update

最后，我們需要將PHP 7與MySQL驅動程序一起安裝。 為此，只需執行以下三個命令：

$ sudo apt-get install php7.0 php7.0-fpm php7.0-mysql -y

$ sudo apt-get --purge autoremove -y

$ sudo apt-get --purge autoremove -y

$ sudo service php7.0-fpm start