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65 lines
1.9 KiB
Markdown
65 lines
1.9 KiB
Markdown
# PHP
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An easily integratable language for dynamic HTML with read/write file access possible on the server side.
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# Installation
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As always, we're assuming Debian + Nginx for this.
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```sh
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apt update
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apt install php php-fpm
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```
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`php-fpm` should automatically enable it's service.
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Verify via `systemctl status php7.3-fpm.service`
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# Setup
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Check whether you want to use a TCP connection or a UNIX socket for php connections.
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The default and recommended way is TCP/IP.
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## TCP/IP
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You can edit the IP and port of the connection in `/etc/php/7.3/fpm/pool.d/www.conf`
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The default is:
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```
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listen = 127.0.0.1:9000
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```
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## Socket
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For socket, use:
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```
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listen = run/php/php7.3-fpm.sock
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```
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## Nginx
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To enable nginx to talk to php add the following to your website config:
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```nginx
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location ~\.php${
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include snippets/fastcgi-php.conf
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fastcgi_pass 127.0.0.1:9000;
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}
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```
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replace TCP/IP address with the appropriate socket file if that's your preferred setup.
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Afterwards, since you've modified the nginx config, this of course requires a `systemctl restart nginx`.
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Tip: `nginx -t` let's you verify your syntx without killing the running nginx instance, leading to a smoother switchover.
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Create a file in the root dir for your website (so probably somwhere in `/var/www/`) ending in `.php` with the content:
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```php
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<?php
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phpinfo();
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```
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And visit `example.com/file.php` to see whether it worked.
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You should get a screen with a lot of information about your php installation.
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## File writing permissions
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Per default PHP is unable to read or write to your server drive.
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It is best for this to re-own any directories where php will be writing to to the user and group `www-data`.
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Thus a
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```sh
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chown -R www-data:www-data <dir>
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chmod -R 744 <dir>
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```
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should be a good starting-off point.
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Files only need to have permissions of `644` of course so maybe change that as well.
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# Learning PHP
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If you're completely new to php [w3schools' course](https://www.w3schools.com/php) is probably a good starting point.
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