[Solar-talk] Solar_Struct

[Paul M Jones]

Hi all,

Regarding Antti's problem with Solar_Struct, it looks like asking for  
a struct key using array notation *will not* work in a foreach()  
call.  This may be related to the following bug reports:

     http://bugs.php.net/bug.php?id=34783
     http://bugs.php.net/bug.php?id=32983

However, getting a struct key using object notation in a foreach()  
*does* work.  See attached script (requires SVN version of  
Solar_Struct).

To describe in detail, this works as expected:

	// key 'foo' is an array or struct
	foreach ($struct->foo as $key => $val) {
	    echo "$key = $val\n";
	}

And so does this:

	// key 'foo' is an array or struct
	$list = $struct['foo'];
	foreach ($list as $key => $val) {
	    echo "$key = $val\n";
	}

But this raises a fatal error:

	// key 'foo' is an array or struct
	foreach ($struct['foo'] as $key => $val) {
	    echo "$key = $val\n";
	}
	
	// Fatal error: Objects used as arrays in post/pre
	// increment/decrement must return values by reference

So it looks like the error is related to the foreach() call, maybe  
something to do with combining Iterator and ArrayAccess.

I know this may not be in line with expectations (i.e., "struct works  
just like an array in most cases").  I guess this is not one of "most  
cases."

I am going to report this as a new bug with PHP and see what happens,  
but I don't have a good solution for it in the mean time.  If anyone  
else here can think of anything let me know.  Very sorry about this. :-(


--

Paul M. Jones  <http://paul-m-jones.com>

Solar: Simple Object Library and Application Repository
for PHP5.   <http://solarphp.com>

Savant: The simple, elegant, and powerful solution for
templates in PHP.   <http://phpsavant.com>

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