title: How can I enable the MySQLi extension in PHP 7?
body: <p>I have installed PHP 7 and MySQL 5.5.47 on Ubuntu&nbsp;14.04 (Trusty Tahr).</p>
  
  <p>I have checked installed extension using:</p>
  
  <pre><code>sudo apt-cache search php7-*
  </code></pre>
  
  <p>It outputs:</p>
  
  <pre><code>php7.0-common - Common files for packages built from the PHP source
  libapache2-mod-php7.0 - server-side, HTML-embedded scripting language (Apache 2 module)
  php7.0-cgi - server-side, HTML-embedded scripting language (CGI binary)
  php7.0-cli - command-line interpreter for the PHP scripting language
  php7.0-phpdbg - server-side, HTML-embedded scripting language (PHPDBG binary)
  php7.0-fpm - server-side, HTML-embedded scripting language (FPM-CGI binary)
  libphp7.0-embed - HTML-embedded scripting language (Embedded SAPI library)
  php7.0-dev - Files for PHP7.0 module development
  php7.0-dbg - Debug symbols for PHP7.0
  php7.0-curl - CURL module for PHP
  php7.0-enchant - Enchant module for PHP
  php7.0-gd - GD module for PHP
  php7.0-gmp - GMP module for PHP
  php7.0-imap - IMAP module for PHP
  php7.0-interbase - Interbase module for PHP
  php7.0-intl - Internationalisation module for PHP
  php7.0-ldap - LDAP module for PHP
  php7.0-mcrypt - libmcrypt module for PHP
  php7.0-readline - readline module for PHP
  php7.0-odbc - ODBC module for PHP
  php7.0-pgsql - PostgreSQL module for PHP
  php7.0-pspell - pspell module for PHP
  php7.0-recode - recode module for PHP
  php7.0-snmp - SNMP module for PHP
  php7.0-tidy - tidy module for PHP
  php7.0-xmlrpc - XMLRPC-EPI module for PHP
  php7.0-xsl - XSL module for PHP
  php7.0 - server-side, HTML-embedded scripting language (metapackage)
  php7.0-json - JSON module for PHP
  php-all-dev - package depending on all supported PHP development packages
  php7.0-sybase - Sybase module for PHP
  php7.0-sqlite3 - SQLite3 module for PHP
  php7.0-mysql - MySQL module for PHP
  php7.0-opcache - Zend OpCache module for PHP
  php7.0-bz2 - bzip2 module for PHP
  </code></pre>
  
  <p>I am not able to see the MySQLi extension using phpinfo() either. How can I enable/install MySQLi extension in PHP&nbsp;7?</p>
  
  <p>That's why I cannot use phpMyAdmin. It says "The mysqli extension is missing."</p>