Sorry for the ambiguity in my original message, and thanks to Tig for
PM-ing me about that.
To clarify, I support the syntax for:
> echo function(var)[0];
and I believe this syntax:
> $tmp = getimagesize('./path/to/image');
> echo $tmp[1];
to be awkward and inconvenient. Furthermore, it feels like an
unrefined edge in the PHP syntax because in this case $tmp is a
completely throwaway variable.
While coding I had always wished PHP could have "echo
function(var)[0]" and would like to help make this possible. Are there
any good reasons currently why the RFCs for this aren't getting
accepted?
- Harrison
On Sat, Jun 5, 2010 at 6:47 PM, Harrison Yuan <newrevoluti...@gmail.com> wrote:
>
> I don't understand what is holding PHP back from having this syntax.
>
> Tig said:
> <?
> $tmp = getimagesize('./path/to/image');
> echo $tmp[1];
> ?>
>
> The need to assign the trivial variable $tmp first is completely arbitrary.
> Is it not a design goal somewhere that languages should allow the greatest
> degree of literal expression possible, consistent with existing syntax &
> semantics rules?
>
> I am new here but would be interested in helping with a patch (+ hopefully
> another RFC) for this. What exactly are the specific arguments against array
> dereferencing?
>
> - Harrison
>
> On Fri, Jun 4, 2010 at 4:19 PM, mathieu.suen <mathieu.s...@easyflirt.com>
> wrote:
>>
>> On 06/04/2010 10:00 AM, Richard Quadling wrote:
>>>
>>> On 4 June 2010 08:18, mathieu.suen<mathieu.s...@easyflirt.com> wrote:
>>>
>>>>
>>>> Hi
>>>>
>>>> Why not something more generic.
>>>> Someone could think of a ValueNode.
>>>>
>>>> Then it could be use for object, array, any primitive type ...
>>>>
>>>> I will take the ValueNode as a non terminal grammar node.
>>>> So first we could do that:
>>>>
>>>> ValueNode->method();
>>>> ValueNode::sMethod();
>>>> ValueNode[];
>>>> foo(ValueNode);
>>>> echo ValueNode;
>>>> $e = ValueNode;
>>>> ...
>>>>
>>>> And a ValueNode could be define as:
>>>>
>>>> ValueNode :
>>>>
>>>> NewStatement
>>>> | FunctionCall
>>>> | PrimitiveValue
>>>> | '(' ValueNode ')'
>>>> | ...;
>>>>
>>>> This would allow all this syntax:
>>>>
>>>> (new A())->foo();
>>>> foo(new A());
>>>> foo->bar()[1];
>>>> foo()[5];
>>>>
>>>> and many others.
>>>>
>>>>
>>>> On 06/04/2010 03:19 AM, Kalle Sommer Nielsen wrote:
>>>>
>>>>>
>>>>> Hi Tig
>>>>>
>>>>> 2010/6/4 Tig<tigger...@gmail.com>:
>>>>>
>>>>>
>>>>>>
>>>>>> Would be at all possible to implement this kind of shortcut?
>>>>>>
>>>>>>
>>>>>
>>>>> Its called array-dereferencing and it was proposed countless times,
>>>>> including by myself. There is an RFC for this[1] and it was planned on
>>>>> the old PHP6 todo at the PDT[2].
>>>>>
>>>>> [1] http://wiki.php.net/rfc/functionarraydereferencing
>>>>> [2] http://wiki.php.net/summits/pdmnotesmay09#php_6 (see point #13)
>>>>>
>>>>>
>>>>>
>>>>
>>>> --Mathieu Suen
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>> Not an expert in this area, but does this mechanism limit you to using
>>> single dimensional arrays?
>>>
>>>
>>
>> Of course not as soon as you add array access to a ValueNode
>>
>> ValueNode
>>
>> ..
>> | ArrayAccess
>> ...;
>>
>> This is very simple and it can refactor greatly the parser.
>>
>> -- Mathieu Suen
>>
>>
>>
>
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