Php $

Welcome to the Linux community forum and interact with 2 million technical staff. $ _ ENV in php stores some system environment variables. The values vary depending on the environment. however, sometimes $ _ ENV is empty, which may be due to the following reasons. the variables_order value in ini is "GPCS", that is, the order in which the system defines PHP predefined variables is GET, POST, C

Welcome to the Linux community forum, and interact with 2 million technical staff> $ _ ENV in php stores some system environment variables. The values vary depending on the environment. however, sometimes $ _ ENV is empty, which may be due to the following reasons. the variables_order value in ini is "GPCS", that is, the order in which the system defines PHP predefined variables is GET, POST, C

Welcome to the Linux community forum and interact with 2 million technicians>

In php, $ _ ENV stores some system environment variables, which have different values due to different environments.

However, sometimes $ _ ENV is empty for the following reasons:

In php. the variables_order value in ini is "GPCS". That is to say, the order in which the system defines PHP predefined variables is GET, POST, COOKIES, SERVER, and Environment (E ), you can modify php. the variables_order value of the INI file is the order you want, for example, "EGPCS ". then, the value of $ _ ENV can be obtained.

EGPCS (EGPCS are short for Environment, Get, Post, Cookies, and Server. This is the full range of external variable sources in PHP ).