How to install fileinfo extension in PHP settings

In PHP, the fileinfo extension is a very important function. It can help us automatically identify file types when reading files, making our code more accurate and safe, and also improving the user experience. However, in the default settings of PHP, the fileinfo extension is not installed and we need to install it manually. Next, let’s take a look at how to install the fileinfo extension in PHP settings.

Preparations before installing the extension

Before installing the fileinfo extension, we need to confirm that the PHP environment has been installed and has administrator rights.

First, we need to check the current PHP version, which can be queried through the following code:

php -v

Next, we need to confirm whether the fileinfo extension has been installed, which can be queried through the following code:

php -m | grep fileinfo

If this command does not return any information, it means that the fileinfo extension is not installed in our PHP environment.

Install fileinfo extension

There are many ways to install fileinfo extension. Below we will introduce two common methods respectively.

Method 1: Install through pecl

pecl is an extension package management tool for PHP. You can easily download and install extensions through pecl.

First of all, we need to confirm whether pecl has been installed. You can query it through the following code:

pecl version

If the command does not return any information or prompts "command not found", it means that our system pecl is not installed in. We can install pecl through the following code:

sudo apt-get install php-pear

After the installation is completed, we can install the fileinfo extension through pecl. The specific command is as follows:

sudo pecl install fileinfo

During the installation process, we need to follow Prompts for selection and confirmation. After the installation is complete, we need to enable the extension in the PHP configuration file. The specific operations are as follows:

1. Open the PHP configuration file php.ini: sudo vim /etc/php/7.x/cli/php.ini (Note, the x here Represents the PHP version number)
2. Add the following code in the file:

extension=fileinfo.so

Save and close the file.

Finally, we need to restart the PHP service to make the configuration file take effect. The specific operations are as follows:

sudo service php7.x-fpm restart

(Note that x here represents the PHP version number)

Method 2: Install through compilation

In addition to installing through pecl, we can also compile through Install the fileinfo extension.

First, we need to download the source code of the fileinfo extension, which can be downloaded through the following command:

wget http://pecl.php.net/get/fileinfo-x.x.x.tgz

(Note that x.x.x here represents the version number of the fileinfo extension, which can be downloaded from pecl.php. net)

After the download is completed, we need to decompress the file:

tar -xvf fileinfo-x.x.x.tgz

After the decompression is completed, we enter the directory and execute the following command:

phpize

This command will generate a "configure" file in the current directory. We can install the fileinfo extension through the following command:

./configure && make && sudo make install

The compilation process may take some time, please be patient. After the installation is complete, we also need to enable the extension in the PHP configuration file. The specific operations are similar to those in the pecl installation method.

Summary

Whether it is installed through pecl or compiled, the final result is that the fileinfo extension is successfully installed. In daily programming, we can use the fileinfo extension to identify file types, so as to handle file-related operations more accurately and safely. Hope this article can be helpful to you.

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