developer-roadmap/roadmaps/php/content/constants@VLRLymQmLfscrBfzXKvHi.md

Constants

Constants are identifiers for fixed values that cannot be changed during script execution. They are defined using define() or the const keyword. Unlike variables, constants do not use a $ prefix and are globally accessible throughout the script without needing the global keyword.

Visit the following resources to learn more:

• @official@Constants