[PHP-DEV] Bug #11962 Updated: eval() doesn't handle multi-dimentional arrays.
ID: 11962 Updated by: jeroen Reported By: [EMAIL PROTECTED] Old Summary: eval() doesn't handle multi-dimentional arrays. Old Status: Open Status: Bogus Bug Type: Scripting Engine problem Operating System: RedHat 6.2 PHP Version: 4.0.6 New Comment: Your string equals 'echo $GLOBALS[page][title];', and RTFM why that doesn't work. Previous Comments: [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. ATTENTION! Do NOT reply to this email! To reply, use the web interface found at http://bugs.php.net/?id=11962edit=1 -- PHP Development Mailing List http://www.php.net/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
[PHP-DEV] Bug #11962 Updated: eval() doesn't handle multi-dimentional arrays.
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:
[2001-07-09 07:08:59] [EMAIL PROTECTED]
Your string equals
'echo $GLOBALS[page][title];', and RTFM why that doesn't work.
[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.
ATTENTION! Do NOT reply to this email!
To reply, use the web interface found at http://bugs.php.net/?id=11962edit=1
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