Richard Damon wrote:
...
then elsewhere you could do

foo(j)

and after that j is 2

you also could do

foo(1)

and after that if you did

j = 1

then now j might have the value 2 as the constant 1 was changed to the
value 2 (this can cause great confusion)

Wow! So fubar that such a feature should definitely makes its
way into PHP!



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