Re: [PHP] Broken compatibility with escaping { in php 5.2

On cs, 2007-01-18 at 14:19 +0100, Jochem Maas wrote:
Bogdan Ribic wrote:
Hi all,

Try this:

$a = '';
echo "\{$a}";

from php 4, it outputs "{}", from php 5.2 (one that comes with Zend 5.5)

no-one here supports Zend.

it outputs "\{}", thus breaking existing scripts.

AFAICT the escaping in that string is wrong - the fact that it did work
the way you want it to is probably sheer luck.

lastly I ran your tests and determined at the least that the 'break'
occur *prior* to 5.2. at a guess it probably changed in 5.0, here are my results:

# php -r 'echo "php",phpversion(),":\n"; $a = ""; var_dump("\{$s}");' ;
php5 -r 'echo "php",phpversion(),":\n"; $a = ""; var_dump("\{$s}");'

OUTPUT:

php4.3.10-18:
string(2) "{}"
php5.1.2:
string(3) "\{}"



be pragmatic - fix your script :-)

is this the correct form:

$a = '';
echo "\{$a\}";

if I want to get "{}" a result?

(I think it is)

greets
Zoltán Németh


.

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