Everything

php

With End With

php.internals

jason davidson

22 years ago

Ive seen the Control Flow constuct With ...End With used in VB (yup,
VB.. :)) although im not a fan of VB, i liked the feature, is there any
consideration to this kind of construct for php.
here the only example if it i could find online for anyone that hasnt
seen it before.
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcn7/html/vaconusingwith.asp
Aside from being VB, is there anything wrong with it.

Jason

netcat

22 years ago

On Wed, 2003-12-10 at 03:01, jason davidson wrote:

> Ive seen the Control Flow constuct With ...End With used in VB (yup,
> VB.. :)) although im not a fan of VB, i liked the feature, is there any
> consideration to this kind of construct for php.
> here the only example if it i could find online for anyone that hasnt
> seen it before.
> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcn7/html/vaconusingwith.asp
> Aside from being VB, is there anything wrong with it.
>
> Jason

As for me - i would solve it with PHP without changing the langauge
in the following way:

> Sub MyInput()
>    With Workbooks("Book1").Worksheets("Sheet1").Cells(1, 1)
>       .Formula = "=SQRT(50)"
>       With .Font
>          .Name = "Arial"
>          .Bold = True
>           .Size = 8
>       End With
>    End With
> End Sub

would produce somthing like:
function my_input() {
global $workbooks;
$chg=array('formula'=>'sqrt(50)',
'font'=>array('name'=>'Arial','bold'=>true,'size'=>8)):
join_properties($workbooks['book1'].workshhets['sheet1'].cells[1][1],$chg)
}


Here is working(not heavily tested though) example
that shows the general idea:

<?php
header("Content-type: text/plain\n");
$v=array('xxx'=>1,'yyy'=>array('y1'=>7,'y2'=>8));
print_r($v);
echo "\n";

function update_props_recursively(&$srcdst,$updater) {
foreach($updater as $k=>$v) {
if(is_scalar($srcdst[$k])) {
$srcdst[$k]=$updater[$k];
} else {
update_props_recursively($srcdst[$k],$updater[$k]);
}
}
}

$chg=array('xxx'=>2,'yyy'=>array('y2'=>99));
update_props_recursively($v,$chg);
print_r($v);
?>



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Alan Knowles

22 years ago

This has been discussed before on the mailing list, (either this or ZE2)
and rejected. - have a look through the archives

Regards
Alan

netcat wrote:

Derek Ford

22 years ago

This is highly unusual.... I recently started gathering people who could
implement and opinions of those who wanted or didn't want a 'with'
construct.

http://www.phpfreaks.com/forums/topic11451.php

I toyed with the idea, and then when I went into core to implement it, I
became _very_ confused and discovered I just wasn't good enough


.

jason davidson

22 years ago

Derek Ford wrote:

> This is highly unusual.... I recently started gathering people who
> could implement and opinions of those who wanted or didn't want a
> 'with' construct.
>
> http://www.phpfreaks.com/forums/topic11451.php
>
> I toyed with the idea, and then when I went into core to implement it,
> I became _very_ confused and discovered I just wasn't good enough
>
>
> .
>

yup, i like the construct, i saw your forum, i would prefer to have some
syntax indication that your method or prop call is part of the object
block though, which is unlike javascripts implemtation, something like..

with($obj) {
.property = '';
.method();
}

i know that php already uses the '->' syntax, but as was already posted,
that is hideously ugly
Jason

Timm Friebe

22 years ago

On Thu, 2003-12-11 at 00:29, Alan Knowles wrote:

> This has been discussed before on the mailing list, (either this or ZE2)
> and rejected. - have a look through the archives

http://zend.com/phorum/read.php?num=6&id=242&loc=0&thread=242

- Timm

jason davidson

22 years ago

Timm Friebe wrote:

>On Thu, 2003-12-11 at 00:29, Alan Knowles wrote:
>
>
>>This has been discussed before on the mailing list, (either this or ZE2)
>>and rejected. - have a look through the archives
>>
>>
>http://zend.com/phorum/read.php?num=6&id=242&loc=0&thread=242
>
>- Timm
>
>
>
>

THanks for the thread, i see at least im not the only one that likes the
idea, however, i would really prefer the syntax to seperate methods and
properties from funcions and vars inside the with block.

Jason

T.R. Cox

22 years ago

jason davidson wrote:

> Ive seen the Control Flow constuct With ...End With used in VB (yup,
> VB.. :)) although im not a fan of VB, i liked the feature, is there
> any consideration to this kind of construct for php.
> here the only example if it i could find online for anyone that hasnt
> seen it before.
> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcn7/html/vaconusingwith.asp
>
> Aside from being VB, is there anything wrong with it.
>
> Jason
>

So how would that look in PHP?  Something like?

With $dbObject;
if(->doConnect()==true)
{
->doQuery();
while($row = ->fetchArray())
{ /* do something with returned row */ }
}
End With:

Just a question from an onlooker.

Cheers,
BDKR

Walt Boring

22 years ago

BDKR wrote:

> jason davidson wrote:
>
>> Ive seen the Control Flow constuct With ...End With used in VB (yup,
>> VB.. :)) although im not a fan of VB, i liked the feature, is there
>> any consideration to this kind of construct for php.
>> here the only example if it i could find online for anyone that hasnt
>> seen it before.
>> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcn7/html/vaconusingwith.asp
>>
>> Aside from being VB, is there anything wrong with it.
>>
>> Jason
>>
> So how would that look in PHP?  Something like?
>
> With $dbObject;
> if(->doConnect()==true)
>    {
>    ->doQuery();
>    while($row = ->fetchArray())
>        { /* do something with returned row */ }
>    }
> End With:
>
> Just a question from an onlooker.
>
> Cheers,
> BDKR
>

yuk!  This would start php down the slippery slope of unreadable
code...et all perlisms.  no thanks.
Just think of a large block of code and 30 lines down all you had was

->$foo = blah;  or ->something('foo')

This is high on the yuk meter

Yuk
(        /)

W

T.R. Cox

22 years ago

walt boring wrote:

> BDKR wrote:
>
>> jason davidson wrote:
>>
>>> Ive seen the Control Flow constuct With ...End With used in VB (yup,
>>> VB.. :)) although im not a fan of VB, i liked the feature, is there
>>> any consideration to this kind of construct for php.
>>> here the only example if it i could find online for anyone that
>>> hasnt seen it before.
>>> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcn7/html/vaconusingwith.asp
>>>
>>> Aside from being VB, is there anything wrong with it.
>>>
>>> Jason
>>>
>> So how would that look in PHP?  Something like?
>>
>> With $dbObject;
>> if(->doConnect()==true)
>>    {
>>    ->doQuery();
>>    while($row = ->fetchArray())
>>        { /* do something with returned row */ }
>>    }
>> End With:
>>
>> Just a question from an onlooker.
>>
>> Cheers,
>> BDKR
>>
> yuk!  This would start php down the slippery slope of unreadable
> code...et all perlisms.  no thanks.
> Just think of a large block of code and 30 lines down all you had was
>
> ->$foo = blah;  or ->something('foo')

And we aren't even talking about nested With statements yet! Doh!

>
> This is high on the yuk meter

LOL! I agree 100%.  I just had to write it out to visualize it. It
doesn't visualize very well at all.

>
> Yuk
> (        /)
>
> W
>

Cheers,
BDKR

Justin Hannus

22 years ago

I've used the "with (object)" construct in JavaScript before and I'm
assuming it would work the same, but instead of:

With $obj
->methodCall();
// ugly ...

it would be much sexier like:

with ($obj) {
methodCall();
}

But its all just sugar. As far as implementing it in userland with a
recursive function that merges properties, that's way to much unnecessary
work. Why not just manually de-reference the object on subsequent method
calls?

-justin

"Bdkr" <bdkr@highsidecafe.com> wrote in message
news:3FD762B5.1080908@highsidecafe.com...

> jason davidson wrote:
>
> > Ive seen the Control Flow constuct With ...End With used in VB (yup,
> > VB.. :)) although im not a fan of VB, i liked the feature, is there
> > any consideration to this kind of construct for php.
> > here the only example if it i could find online for anyone that hasnt
> > seen it before.
> >

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcn7/html/
vaconusingwith.asp

netcat

22 years ago

On Wed, 2003-12-10 at 22:42, Justin Hannus wrote:

> I've used the "with (object)" construct in JavaScript before and I'm
> assuming it would work the same, but instead of:
>
> With $obj
> ->methodCall();
> // ugly ...
>
> it would be much sexier like:
>
> with ($obj) {
>     methodCall();
> }
>
> But its all just sugar. As far as implementing it in userland with a
> recursive function that merges properties, that's way to much unnecessary
> work. Why not just manually de-reference the object on subsequent method
> calls?
>
> -justin

I guess your proposal is much simplier (if i understand it correctly)
but i personally prefer merging properties becuase of thinking:
1) I have some object
2) I want to change it's prop's
3) So I just "commit" (right word?, "apply" maybe) the changes

This way I can have something like that:
$styles=array('style1'=>
array('font'=>'+2','bold'=>true),
'style2'=>
array('font'=>'-1','bold'=>false));

change_props_recursively($mytext,$styles[$cur_style]);

Well, having all the changes in a variable and not code
gives some advantages i believe... it can be passed, modified,
serialized... the applying function can be tweaked maybe ...

When the "change" should be computed I still prefer to compute
the recursive hash and apply it at once.

P.S.
Just my 2 agoras.

[snip]


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