How to install mysqli extension in php7

How to install the mysqli extension in php7: 1. Find mysqli in the ext directory and execute the phpize command; 2. Execute the [./configure] command in the mysqli folder; 3. Execute the [make install] command.

The operating environment of this article: centos 7 system, php 7, thinkpad t480 computer.

The following is how to install the mysqli extension in PHP 7. Let’s take a look at it together.

1. Find mysqli in the php7.2 ext directory.

2. Enter /usr/local/php7.2/bin/phpize

3. In Execute ./configure in the mysqli folder --with-php-config=/usr/local/php/bin/php-config --with-mysqli=/usr/bin/mysql_config

4, make

5. make install

2. Errors encountered during the installation process and solutions

Problem 1: If mysql_config cannot be found, mysql-devel may not be installed

Need to install the source of MySQL

At this time, the relevant repo of MySQL will appear in the /etc/yum.repos.d/ directory

yum install mysql-devel

Question 2: When installing mysqli, an error occurs: ext/mysqlnd/mysql_float_to_double.h: No such file or directory

Solution steps

1. vim /home/tmp/php- 7.2.11/ext/mysqli/mysqli_api.c (find your installation directory here)

2. Modify the path on line 36 of the file

/ext/mysqlnd/mysql_float_to_double.h

to

/home/tmp/php-7.2.11/ext/mysqlnd/mysql_float_to_double.h

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