16_PHP by Murad Isa

PHP

murado — 2015-08-18 15:05:09 UTC

https://php.net/
server-side scripting language,
designed for web development,
general-purpose programming language,
As of January 2013, PHP was installed on more than 240 million websites (39% of those sampled) and 2.1 million web servers,code can mixed with HTML code,
used in combination with various templating engines and web frameworks,
deployed on most web servers on almost every operating system and platform,
free of charge.

PHP - Tutorial

murado — 2015-10-25 09:46:08 UTC

PHP - Installation

murado — 2015-10-25 09:47:24 UTC

https://linuxize.com/post/how-to-install-php-on-ubuntu-18-04/

apt install php libapache2-mod-php php-mcrypt php-cli -y

apt install php-mysql php-gd -y

systemctl restart apache2

PHP Info

murado — 2015-10-25 09:50:26 UTC

PHP - Configuration

murado — 2015-10-25 09:57:41 UTC

https://help.ubuntu.com/community/ApacheMySQLPHP

php.ini development vs. production

After standard installation, php configuration file /etc/php5/apache2/php.ini is set so as "production settings" which means, among others, that no error messages are displayed. So if you e.g. make a syntax error in your php source file, apache server would return HTTP 500 error instead of displaying the php syntax error debug message.

If you want to debug your scripts, it might be better to use the "development" settings. Both development and production settings ini's are located in /usr/share/php5/

/usr/share/php5/php.ini-development
/usr/share/php5/php.ini-production

so you can compare them and see the exact differences.

To make the "development" settings active, just backup your original php.ini

sudo mv /etc/php5/apache2/php.ini /etc/php5/apache2/php.ini.bak

and create a symlink to your desired settings:

sudo cp -s /usr/share/php5/php.ini-development /etc/php5/apache2/php.ini

or you may of course also edit the /etc/php5/apache2/php.ini directly on your own, if you wish.

Installing PHP 7.2 with Nginx

murado — 2019-08-11 05:44:10 UTC

Unlike Apache, Nginx doesn’t have a built in support for processing PHP files so we need to install a separate application such as PHP FPM (“fastCGI process manager”) which will handle PHP files.

To install the PHP and PHP FPM packages:

apt  install  php-fpm

check the status of the PHP FPM service:

systemctl  status  php7.2-fpm

Output:

* php7.2-fpm.service - The PHP 7.2 FastCGI Process Manager
Loaded: loaded (/lib/systemd/system/php7.2-fpm.service; enabled; vendor preset: enabled)
Active: active (running) since Sat 2018-06-30 23:56:14 PDT; 1min 28s ago
Docs: man:php-fpm7.2(8)
Main PID: 10080 (php-fpm7.2)
Status: "Processes active: 0, idle: 2, Requests: 0, slow: 0, Traffic: 0req/sec"
Tasks: 3 (limit: 2321)
CGroup: /system.slice/php7.2-fpm.service
|-10080 php-fpm: master process (/etc/php/7.2/fpm/php-fpm.conf)

edit Nginx server block. so that Nginx can process PHP files:

server {

    # . . . other code

    location ~ \.php$ {
        include snippets/fastcgi-php.conf;
        fastcgi_pass unix:/run/php/php7.2-fpm.sock;
    }
}

restart the Nginx service :

systemctl  restart  nginx