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What is the difference of using $_ENV and $GLOBALS ?
I wish to have a global variable to get and set at anytime and anywhere (need to be accessible in OO class & plain procedural PHP script). Which of the above should I use?
You should not use global variables at all and instead use dependency injection (i.e. pass all necessary data as function parameters), but if you have to, use
$GLOBALS.$_ENVholds data from outside the PHP script passed by the system. While it may serve the purpose as a superglobal, that’s not what it’s meant for.