How to install mysqli in php7 and encounter pitfalls

How to install mysqli in php7: First find mysqli in the "php7.2 ext" directory; then enter "/usr/local/php7.2/bin/phpize"; then execute " mysql_config"; finally install it.

Recommended: "PHP7"

php7 Pitfalls and solutions for installing the mysqli extension

1. Installation steps

1. Find mysqli in the php7.2 ext directory

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

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

4, make

5, make install

2. Pitfalls

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

1. You need to install the source of MySQL

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

3 yum install mysql-devel

Problem 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

Modified to

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

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