How check memory location of variable in php?

Question

How check memory location of variable in php?

Thanks

Answer 1

I'm fairly certain this isn't possible in PHP. You might be able to create an extension to do this, but I can't see any use for it. Memory addresses are useless within PHP scripts since the interpreter handles all the internal variable works. Outside of PHP (say manipulating a memory address with C or C++) would be dangerous to say the least. I would expect you could crash a script and possibly your interpreter if you modified a memory address used by a PHP script while it was executing.
If you are looking for internal pointers in PHP, though, take a look into references. It might take a few reads to wrap your head around them, but if you need to pass by reference, look into them. Quick example: