Your code doesn't make much sense to me. This is your code, right?
if(zend_hash_find(&EG(symbol_table), var, strlen(var)+1, (void
**)&vars_data)!=FAILURE)
{
ZEND_SET_SYMBOL(EG(active_symbol_table), var, *vars_data);
}
So you look for a global variable named whatever the contents of 'var' is.
If you find it, you put it in the function-local symbol table. This is
not at all what you said you wanted to do. And you don't check to see if
the active_symbol_table is the same as the symbol_table which it would be
if you were to call this function from the global scope.
-Rasmus
On Fri, 1 Aug 2003, Ken Spencer wrote:
> On Fri, 1 Aug 2003, Mark Spruiell wrote:
>
>
> Mark, thanks for your reply. The situation is, is that I am writing a
> large piece of software with several hundred functions. At the beginning
> of each function I have som initialization code that allows me to do
> several thing.
>
> Parse through the variables in a non standard way, and define a few
> variables to be global within the function.
>
> The only way I was able to accomplish this in the past was to call an
> include from the beginning of each function (as there is no way to write a
> function that uses func_get_args()). Calling this include however is quite
> inneficient, and I have replaced most of what it does with my C extension.
>
> I have also tried using the zend_register_auto_global function, but this
> appears to cause a great deal of unpredictable behaviour.
>
> Cheers,
>
> Ken
>
>
>
> > Hi Ken,
> >
> > I'm fairly new to PHP extension programming, so forgive me if I'm
> > missing the obvious, but your code appears to be trying to copy a
> > global variable to a local scope. Is that your intent?
> >
> > If so, why can't the script do this itself by using a "global"
> > declaration for the variable? For example:
> >
> > <?
> > $v = "foo";
> >
> > function bar()
> > {
> > global $v;
> > echo "v = $v\n";
> > }
> > ?>
> >
> > As for why you're getting a segfault, I suspect it's a reference
> > counting issue. Have a look at the definition of
> > ZEND_SET_SYMBOL_WITH_LENGTH in zend_API.h and you'll see it is
> > modifying the container you retrieved from EG(symbol_table).
> >
> > Good luck,
> > - Mark
> >
> > > I am trying to make a function for my extension that makes a predefined
> > > variable global
> > >
> > > I have tried something along the lines of:
> > >
> > > if(zend_hash_find(&EG(symbol_table), var, strlen(var)+1, (void **)
> > > &vars_data)!=FAILURE)
> > > {
> > > ZEND_SET_SYMBOL(EG(active_symbol_table), var, *vars_data);
> > > }
> > >
> > > but it seg faults upon second execution.
> > >
> > > Can someone reccomend a more successful method of accomplishing this?
> > >
> > >
> > > Chhers,
> > >
> > > Ken
> > >
> > >
> > >
> > > --
> > > PHP Internals - PHP Runtime Development Mailing List
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> > >
> > >
> >
> >
> >
>
>
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