ID: 11962
Updated by: derick
Reported By: [EMAIL PROTECTED]
Old Summary: eval() doesn't handle multi-dimentional arrays.
Status: Bogus
Bug Type: Scripting Engine problem
Operating System: RedHat 6.2
PHP Version: 4.0.6
New Comment:
Because the parser ain't smart enough, try echo $GLOBALS['page']['id']; or echo
"{$GLOBALS['page']['id']}"; (the first one is faster).
Derick
Previous Comments:
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[2001-07-09 07:08:59] [EMAIL PROTECTED]
Your string equals
'echo "$GLOBALS[page][title]";', and RTFM why that doesn't work.
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[2001-07-08 20:00:57] [EMAIL PROTECTED]
It appears that eval() does not handle mutli-dimentional arrays properly e.g.
$page[title] = 'Page';
$test = '$page[title]';
If I do:
eval( 'echo "'.$test.'";' );
I get:
Page
as the output, however if I change $test to:
$test = '$GLOBALS[page][title]';
then do:
eval( 'echo "'.$test.'";' );
I get:
Array[title]
as my output.
My best guess for the reason this is happening is that when eval() does a lookup for a
variable in the symbol table it is going from top to bottom and stops on the first
match, no matter how complete - From this I am assuming that the symbol table would be
built as follows:
$GLOBALS
$GLOBALS[page]
$GLOBALS[page][title]
so if eval() searched from the top then it would find a partial match against
$GLOBALS[page] which is what I think it is doing.
A better example:
$page[title] = 'Hello';
$string = '$page[title]';
eval( 'echo "'.$string.'";' );
echo "<br>\n";
$string = '$GLOBALS[page][title]';
eval( 'echo "'.$string.'";' );
I hope I make sense to you, if not then please let me know and I will try and be
clearer.
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