Re: Broken compatibility with escaping { in php 5.2

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Németh Zoltán wrote:
> 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)

testing would given you certainty.

I tested it and, although I would have thought it was correct,
it did not given the desired result, the following 2 do give what
your looking for:

echo "{{$s}}", " ", '{'.$s.')';

> 
> greets
> Zoltán Németh
> 
> 

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