How to get the version number quickly by PHP

This article is about how PHP can get the version number quickly. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

1. Use the phpinfo () function to get the PHP version number, which returns information about the PHP configuration.

The output information includes: PHP version, server information and environment variables, PHP environment variables, operating system version information, path and environment variable configuration, HTTP headers, and copyright announcement, and so on.

2. Use the phpversion () function to get the PHP version number, which returns too much content.

If you just want to get the PHP version number, just use the phpversion () function.

3. Use the predefined constant PHP_VERSION.

Constants can return the current version number as a string. The specific format is "major version number. Sub-version number. Phase version number [extension Information]".

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