what are passing arguments by reference and value, PHP Form Handling , PHP

Question:What are passing arguments by reference and passing arguments by value?

Answer passing arguments by value:Means any changes made to those values within the scope of the function are ignored outside of the function.
passing arguments by reference:Means any changes made to those values within the scope of the function are reflected outside of the function.

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What are passing arguments by reference and passing arguments by value?

Question:What are passing arguments by reference and passing arguments by value?

Answer passing arguments by value:Means any changes made to those values within the scope of the function are ignored outside of the function.passing arguments by reference:Means any changes made to those values within the scope of the function are reflected outside of the function.

Question:
What are passing arguments by reference and passing arguments by value?

Answer
passing arguments by value:Means any changes made to those values within the scope of the function are ignored outside of the function.
passing arguments by reference:Means any changes made to those values within the scope of the function are reflected outside of the function.