> Hi there,
> looking around quickly I couldn't find any documentation on the
> following change:
> $a = "foo"; echo "\{$a}";
>
> PHP 4.4.4: {foo}
> PHP 5.2.1: \{foo}
>
> I didn't check which exact version introduced this change. Some
> third-party code used this obscure construct and failed when migrating
> from PHP 4 to PHP 5.
>
> Was this intentional and if yes, should it be documented in
> http://www.php.net/manual/en/migration5.incompatible.php ?
>
> If this has been discussed before then I apologize.
It was changed in 5.1.0-5.1.1 versions.
According to PHP Manual (http://www.php.net/language.types.string) curly
brackets are not escaped with backslash. Escape worked in older PHP
versions. It does not work in 5.1.1+.
http://bugs.php.net/31341
http://bugs.php.net/35411
