How to install mbstring extension under CENTOS7?

1.Uncaught Error: Call to undefined function mb_strlen();

When the above error occurs, it means that we have not installed the mbstring extension;

2. Enter the PHP installation directory

cd /temp001/php-7.1.0/ext/mbstring

3. Start the phpize (/usr/local/bin/phpize or /usr/local/php7-abel001/bin/phpize) command to install the php extension

4../configure --with-php-config=/usr/local/php7-abel001/bin/php-config According to your actual installation directory

5. Compile make && make install

6. At this time, mbstring.so has been generated in the /usr/local/php7-abel001/lib/php/extensions/no-debug-non-zts-20160303/ directory;

7.echo 'extension=mbstring.so' >>/usr/local/php7-abel001/lib/php.ini Enable mbstring extension

8.nginx -s reload, killall php-fpm , ./php-fpm reload php-fpm

9.php -m command can check which extensions have been enabled; php --ini can see some configuration information of php

The mbstring extension has been successfully installed!

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