How are variables passed in php by default

Question

I want to know how is value passed in php by default. Is it by reference or is it by value. I did a search and found that some say it's value only and some say its reference by default. I understand its not a programming question but i need the answer for my recruitment interview.

Some say reference: Clarification of PHP manual; default values passed by reference

Some say Value: Are PHP Variables passed by value or by reference?

To allow for more confusion, "the reference is passed by value" is another option, which I _think_ PHP uses. — Izkata, Oct 02 '13 at 19:00
[Here](https://www.youtube.com/watch?v=_YZIBWQr_yk) is a little YT video from SO member. — Glavić, Oct 02 '13 at 19:10

score 3 · Answer 1 · edited Oct 02 '13 at 19:26

3

Variables are passed by value. However, the value of a variable pointing to an object is the address of the object, not the object itself, so objects passed as method parameters are not copied; both the calling context and method will share the same object instance.

edited Oct 02 '13 at 19:26

deceze

510,633
85
743
889

answered Oct 02 '13 at 19:00

user229044

232,980
40
330
338

How are variables passed in php by default

1 Answers1