Re: Idea to extend language: Explicitly setting variable scope inside user defined function (longer)
| From: | NTPT | Date: | Mon, 21 Oct 2002 16:47:35 +0000 |
| Subject: | Re: Idea to extend language: Explicitly setting variable scope inside user defined function (longer) | ||
| References: | 1 2 3 4 5 6 | Groups: | php.dev |
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----- Original Message -----
From: "Andrey Hristov" <andrey@webgate.bg>
To: "NTPT" <ntpt@centrum.cz>
Cc: <php-dev@lists.php.net>
Sent: Monday, October 21, 2002 6:16 PM
Subject: Re: [PHP-DEV] Idea to extend language: Explicitly setting variable
scope inside user defined function (longer)
> ----- Original Message -----
> From: "NTPT" <ntpt@centrum.cz>
> To: "Andrey Hristov" <andrey@webgate.bg>; "Marco Tabini"
<marcot@tabini.ca>
> Cc: <php-dev@lists.php.net>
> Sent: Monday, October 21, 2002 7:14 PM
> Subject: Re: [PHP-DEV] Idea to extend language: Explicitly setting
variable
> scope inside user defined function (longer)
>
>
> >
> > ----- Original Message -----
> > From: "Andrey Hristov" <andrey@webgate.bg>
> > To: "Marco Tabini" <marcot@tabini.ca>
> > Cc: <php-dev@lists.php.net>
> > Sent: Monday, October 21, 2002 12:42 PM
> > Subject: Re: [PHP-DEV] Idea to extend language: Explicitly setting
> variable
> > scope inside user defined function (longer)
> >
> >
> > >
> > >
> > > > Marco Tabini <marcot@tabini.ca> wrote... :
> > > >
> > > > Well, you have to admit that the issue of variable scope is the
first
> > > > thing that hits someone who approaches PHP for the first time and
> comes
> > > > from other backgrounds, like C or ASP!
> > > >
> > >
> > > For me global vars are bad at all.
> > > If you want to use some value in a function then pass it to the
function
> > > even if you
> > > want you can pass an array will variable ammount of vars that has
names
> as
> > > indexes.
> >
> > Nice idea, i use it sometimes, it works, but ......
> >
> > real life situation like this:
> >
> > <?
> > $sqlstring=" UPDATE testtable SET
> db_value1='$value_1',db_value1='$value_1'
> > .....etc db_value_n='$value_n' ";
> >
> > // now you must produce $passed_variables array , like this
> >
> >
> > // glue code
> > $passed_variables['value_1']=$value_1;
> > $passed_variables['value_2']=$value_2;
> >
> > .
> > etc
> > .
> > $passed_variables['value_n']=$value_n;
> > // end of glue code
> >
> > $result = db_query($passed_variables,$sqlstring)
> > {
> I don't use it like you show but
> $result = db_query(array('value_1'=>$value_1, 'value_2'=>$value_2,
> 'value_n'=>$value_n), $sqlstring);
>
> As you see there are no additional lines.
You still need to construct an array, with take a processor time, and when
you pass it to the function you still need to "unpack" it, this action take
a processor time... you mean to use 'extract()' ?
NTPT
---
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