Robert Cummings wrote:
On Tue, 2003-10-07 at 22:44, Gerard Samuel wrote:
The question is what happens to local variables when the code leaves a
function/method
as far as memory is concerned.
Does it *silently* unset (free the allocated memory) the local
variables, or does it make sense to hardcode
unset() to garbage these local variables?
Thanks
function foo()
{
$bar = 'some large value';
unset($bar);
}
---------
function foo()
{
$bar = 'some large value';
}
AFAIK when the reference count (both explicit and implicit due to
copying optimizations) hits 0, the variable is deleted. Thus within a
function if you declare the variable within the function and it isn't
referenced anywhere else, then it is destroyed when the function's
context is destroyed.
Thanks, pretty much what I was looking for...
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