php manual installation extension

As PHP continues to develop, its functions are becoming more and more powerful. However, the basic functions of PHP are just the beginning, and PHP's extension library is its real soul. These extension libraries can help PHP applications further improve performance, security, and other aspects. But sometimes, installing these extensions can be difficult in a shared hosting environment. In this case, it might be a good idea to manually install the PHP extension.

In this article, we will detail how to manually install PHP extensions in a shared hosting environment. Usually, manual installation of PHP extensions is divided into the following four steps.

1. Determine the extensions you need to install

First, you need to determine the extensions you need to install. You can get a list of extensions for the currently running version of PHP by typing the following command in the terminal: php -m. This returns an extension list containing all extensions supported by the current PHP version.

2. Download and unzip the expansion pack

Once you determine the extensions you need to install, you need to download the corresponding expansion pack. You can get the extension package from PECL (PHP Extension Community Library, PHP Extension Community Library) or GitHub and other places. After downloading the expansion pack, you need to unzip it by going to the directory using a terminal and executing the following command: tar -xzvf .tar.gz.

3. Run the configure file

After decompressing, you need to run the configure file. The purpose of this file is to prepare some necessary elements for the extension. If the configure file needs to be configured, please check your PHP information first, and then add the corresponding options and parameters to the command. For example, if you need to configure the redis extension for PHP 7.3, you should execute the following command:

cd redis-4.1.1
phpize
./configure --with-php-config=/usr /bin/php-config7.3

After executing this command, you will see some output. If all necessary dependencies are found and the configure script runs successfully, the output should be similar to the following:

checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for a sed that does not truncate output... /bin/sed
configure: WARNING:
configure: WARNING: Support for running as a daemon, on Linux with systemd target type, is experimental at best, and often broken.
configure: WARNING: Don't rely on systemd support, until it is declared stable.
configure: WARNING: ##checking for cc... cc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether cc accepts -g... yes
checking for cc option to accept ISO C89... none needed
checking how to run the C preprocessor... cc -E
checking for icc... no

Compile and install the extension

The last step is to compile and install the extension. To compile the extension, you need to execute the following command in the terminal: make. This will build the extension from source code. If executing this command is successful, you can continue installing the extension. Before installing an extension, you can copy it to the PHP extensions directory (usually /usr/lib/php/extensions). Then, add a new extension reference in your PHP.ini file (usually in /etc/php/7.X/cli/php.ini) like this: extension=.so.

After completing the above steps, you need to restart Apache or PHP FastCGI. You can then run the php -m command to verify that the extension was successfully installed.

Summary

Manually installing PHP extensions is also a viable option when using a shared hosting service. You can manually install PHP extensions by identifying the extensions that need to be installed, downloading and decompressing the extension package, running the configure file, and compiling and installing the extension. This approach can be more challenging than getting PHP extensions directly from a shared hosting provider, but is sometimes necessary. How to choose depends largely on your specific needs and environment.

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