Unable to install php-mysqli on PHP7

Question

I have installed PHP 7, mysql5.7, Apache2.2, CentOS6.

And I\'m installing CodeIgniter3.0.6.

When I use database connection, error occured and said

Answer 1

Please remind that the mysql extension is deprecated and doesn't exists anymore with PHP 7.

The php-mysqlnd package provides only the mysqli and pdo_mysql extensions.

The php-pecl-mysql is also available, build from a git snapshot, provided for compatibility for legacy applications, but is not supported.

From the original question:

Installed: php-common-7.0.4-1.el6.remi.x86_64 (@remi-php70)

You have php 7.0.4 installed from remi-php70, but the repository is not enabled. You need to enabled it, so yum will find the right package matching the installed version.

From the Configuration Wizard instructions:

yum install yum-utils
yum-config-manager --enable remi-php70
yum install php-mysqlnd

Notice: the correct command to install an "foo" extension is yum install php-foo, so "yum install php-mysql" will install the package which provides the mysql extension (so php-pecl-mysql), "yum install php-mysqli" will install the packages which provides the mysqli extension (so php-mysqlnd).