Detailed explanation of php7 installation system requirements

PHP is a widely accepted open source scripting language used for web development and creating dynamic web pages. PHP 7 is the latest version of the PHP language, which brings many important changes and improvements, such as faster execution, better memory management and error reporting, better security, and simpler syntax.

However, before installing PHP 7, you need to make sure your system meets the following requirements:

1. Operating System Requirements

PHP 7 supports various operating systems, such as Windows, Mac OS, Linux, etc. However, it does not support older versions of Windows such as Windows XP, 2000, and NT.

For Linux, you need to ensure that your operating system version meets the minimum requirements for installing PHP. These requirements may vary by distribution, but generally are:

• Ubuntu 14.04 and above
• Debian 8 and above
• CentOS 7 and above
• Fedora 25 and above

2. Web server requirements

PHP 7 is suitable for various web servers, such as Apache, Nginx and IIS, etc. If you are using an Apache server, you will need to make sure you have the appropriate modules installed, such as mod_php.

For Nginx server and other web servers, you need some additional configuration to run PHP. Specifically, you need to use a PHP-FPM or FastCGI solution that is compatible with your web server. Additionally, you will need to configure your web server to handle PHP script requests.

3. Memory Requirements

PHP 7 requires sufficient memory to function properly. Typically, there should be at least 128 MB of free memory available on the computer where PHP is installed. However, if you are using certain web servers such as Apache and Nginx, you may need more memory to handle concurrent requests.

4. Hardware Requirements

PHP 7 is designed to run on a variety of hardware platforms. It can run on x86, x64 and ARM architecture computers.

5. Software Requirements

Installing PHP 7 also requires the installation of some other software and libraries, such as:

• OpenSSL: for encryption and decryption communication.
• zlib: used to compress and decompress data.
• XML: used to process XML documents.
• JSON: Used to process JSON data.

You also need to install some PHP extensions, such as pdo_mysql, mysqli, gd, imagick and zip, etc., to provide additional functions and services.

In short, installing PHP 7 requires some configuration and preparation. You need to make sure that your operating system, web server, memory, hardware, and software are all compliant to ensure that PHP 7 can run properly and provide the required functionality.

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