Installation of the mbstring extension under CentOS php

PHP‘s mbstring extension if not installed will cause problems:
Example 1: login phpMyAdmin will prompt no string and string processing library php_mbstring, some programs will
Mb_substr function is used when there is no PHP mbstring extension when the program is run often prompts Fatal error:Call to
undefined function mb_substr()”。
Example 2: install phpRedisAdmin page is blank.
The following installation steps:
1. install mbstring extension
yum -y install php-mbstring
2. configure PHP.ini to support this extension
vi /etc/php.ini
Add files
3. restart the httpd service
service httpd restart