I have installed PHP-MySQL module using
sudo apt-get install php-mysql
but it is showing it has not installed what to do? In ubuntu 16.04.
This is the status, it is showing
root@simple1-ThinkCentre-M710t:/home/simple1# whereis php-mysql
php-mysql:
php-mysql is a meta package that causes the installation of the real package with the binary. In Ubuntu 18.04, this is in php7.2-mysql. You can check the installed packages.
dpkg -l |grep mysql |grep php
ii php-mysql 1:7.2+60ubuntu1 all MySQL module for PHP [default]
ii php7.2-mysql 7.2.5-0ubuntu0.18.04.1 amd64 MySQL module for PHP
And using whereis
whereis php7.2-mysql
php7: /usr/bin/php7.2 /usr/share/php7.2-sqlite3 /usr/share/php7.2-ldap /usr/share/php7.2-common /usr/share/php7.2-mbstring /usr/share/php7.2-readline /usr/share/php7.2-pgsql /usr/share/php7.2-opcache /usr/share/php7.2-mysql /usr/share/php7.2-xml /usr/share/php7.2-json
You can learn more about meta-packages from the MetaPackages Wiki Docs
In Ubuntu 16.04
You aren't using an appropriate method to check if a package is installed.
In your case one of the easy ways would be apt -qq list php-mysql which if installed will output
php-mysql/xenial-updates,xenial-updates,now 1:7.0+35ubuntu6.1 all [installed] and if not you'll get the same output without the [installed]
php-mysql isn't much of a package as it contains only:
/usr/share/doc/php-mysql/changelog.gz
/usr/share/doc/php-mysql/copyright
It however depends on php-common which contains:
/etc/cron.d/php
/usr/lib/php/php-helper
/usr/lib/php/php-maintscript-helper
/usr/lib/php/sessionclean
/usr/sbin/phpdismod
/usr/sbin/phpenmod
/usr/sbin/phpquery
/usr/share/doc/php-common/changelog.gz
/usr/share/doc/php-common/copyright
and php7.0-mysql which contains
/usr/lib/php/20151012/mysqli.so
/usr/lib/php/20151012/mysqlnd.so
/usr/lib/php/20151012/pdo_mysql.so
/usr/share/bug/php7.0-mysql/control
/usr/share/bug/php7.0-mysql/script
/usr/share/doc/php7.0-mysql
/usr/share/lintian/overrides/php7.0-mysql
/usr/share/php7.0-mysql/mysql/mysqli.ini
/usr/share/php7.0-mysql/mysql/mysqlnd.ini
/usr/share/php7.0-mysql/mysql/pdo_mysql.ini
Since:
whereis locates the binary, source and manual files for the specified command names. The supplied names are first
stripped of leading pathname components and any (single) trailing extension of the form .ext (for example: .c) Prefixes
of s. resulting from use of source code control are also dealt with. whereis then attempts to locate the desired pro‐
gram in the standard Linux places, and in the places specified by $PATH and $MANPATH.
and php-mysql is not a command your output is as expected. If you were to try an actual command such as phpquery that is installed when you install php-mysql
You would get:
$ whereis phpquery
phpquery: /usr/sbin/phpquery
TL;DR
What should have happened when you installed php-mysql is all of these packages should have been installed. If as you say it's not installed you can
sudo apt-get install php-common php7.0-common php7.0-mysql to install all the packages that the php-mysql meta package installs.
Sources:
man whereis