Detailed explanation of how to install mysqli extension in PHP 5.5

If you are using PHP 5.5, it is necessary to know how to install the mysqli extension. The mysqli extension is one of the ways to interact with the MySQL database. In this article, we will explain how to install the mysqli extension in PHP 5.5.

Step 1: Make sure you are using PHP 5.5

First, we need to make sure we are using PHP 5.5 because the mysqli extension is a new feature in the PHP 5.3 version.

Enter the following command in the command line window or terminal to check the PHP version:

php -v

If the output shows that the PHP version is lower than 5.5, you need to upgrade to PHP 5.5 or higher.

Step 2: Install MySQL

Since the mysqli extension is used to interact with the MySQL database, MySQL must be installed first. You can install MySQL in Ubuntu using the following command:

sudo apt-get install mysql-server

To install MySQL in CentOS or Fedora, please use the following command:

sudo yum install mysql-server

Step 3: Install the mysqli extension

Yes Two methods are available for installing the mysqli extension: through source code or using precompiled binaries.

First, we will introduce the method of installing the mysqli extension through source code.

Install the mysqli extension from source code:

1. Make sure the PHP development package is installed. You can install the PHP development package using the following command:

   In Ubuntu:

   sudo apt-get install php5-dev

   In CentOS or Fedora:

   sudo yum install php-devel

2. Download the mysqli extension source code . The mysqli extension source code can be downloaded at the following URL:

   https://github.com/php/php-src/tree/master/ext/mysqli

3. Unzip the mysqli extension source code. Unzip the downloaded mysqli extension source code file and store it anywhere on your computer.

4. Open the terminal and navigate to the mysqli extension source code directory. Use the following command to enter the mysqli extension source code directory:

   cd /path/to/mysqli/source/directory

5. Use the following command to compile and compile the mysqli extension:

   phpize

6. Run the following command to configure mysqli Extension:

   ./configure --with-mysqli=/usr/bin/mysql_config

   Assuming you already have MySQL installed, it should be installed in the default directory (/usr/bin/mysql_config).

7. Build the mysqli extension using the following command:

   make

8. Install the extension into PHP by running the following command:

   make install

9. Enable the mysqli extension in the php.ini file. Add the following line in the php.ini file to enable the mysqli extension:

   extension=mysqli.so

10. Restart the Apache web server. Restart the Apache web server using the following command:

    sudo service apache2 restart

Done! Now you have successfully installed the mysqli extension.

Step 4: Install the mysqli extension through precompiled binaries

In addition to installing the mysqli extension through source code, you can also install the mysqli extension using precompiled binaries.

Here are the steps to install the mysqli extension from the precompiled binaries:

1. Install the mysqli extension. Install the mysqli extension in Ubuntu using the following command:

   sudo apt-get install php5-mysqlnd

   In CentOS or Fedora:

   sudo yum install php-mysqlnd

2. Enable the mysqli extension in the php.ini file. Add the following line in the php.ini file to enable the mysqli extension:

   extension=mysqli.so

3. Restart the Apache web server. Restart the Apache web server using the following command:

   sudo service apache2 restart

Done! Now you have successfully installed the mysqli extension through the precompiled binaries.

Conclusion

Installing the mysqli extension is an important step in interacting with a MySQL database using PHP 5.5. The mysqli extension can be installed from source code or precompiled binaries. Before installing the mysqli extension, you must first install MySQL and make sure you are using PHP 5.5 or higher.

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