I have recently started learning PHP and I came across an interesting concept regarding functions. I have been trying to understand if a function in PHP is capable of modifying the original value of a variable that is passed to it.
I have read about pass-by-value and pass-by-reference, and I understand that by default, PHP passes arguments to functions by value. This means that the original value of the variable is not modified within the function. However, I have also learned that it is possible to pass arguments by reference using the ampersand (&) symbol.
Now, my question is, does passing an argument by reference using the ampersand allow a function to modify the original value of the variable? In other words, can a function alter the value of a variable that is passed to it by reference?
I would appreciate it if someone could shed some light on this concept and provide some examples to illustrate how it works. Thank you in advance for your help!
A curious PHP learner