How Can We Unset Variables in Php?

The unset() function in PHP resets any variable. If unset() is called inside a user-defined function, it unsets the local variables. If a user wants to unset the global variable inside the function, then he/she has to use $GLOBALS array to do so.

How do you unset a variable?

unset() destroys the specified variables. The behavior of unset() inside of a function can vary depending on what type of variable you are attempting to destroy. If a globalized variable is unset() inside of a function, only the local variable is destroyed.

Which function is used to unset a variable?

PHP | unset() Function. The unset() function is an inbuilt function in PHP which is used to unset a specified variable.