in my preceding email I've written:
if($var!='')
will fix your all your worries without an intervention of a strings
function.
Sincerely,
Maxim Maletsky
Founder, Chief Developer
PHPBeginner.com (Where PHP Begins)
[EMAIL PROTECTED]
www.phpbeginner.com
-----Original Message-----
From: Joe Stump [mailto:[EMAIL PROTECTED]]
Sent: Sunday, February 25, 2001 1:09 AM
To: PHPBeginner.com
Cc: [EMAIL PROTECTED]
Subject: Re: [PHP] isset()
For the last time - put an input box on a page and submit with NOTHING in
the
box. Now I want SOMETHING in that box (like a name) - isset() will return
true
even though it's empty.
--Joe
On Sat, Feb 24, 2001 at 04:32:11PM +0900, PHPBeginner.com wrote:
> Whatever they input is not the objects, right?
>
> then (I've just double-checked it, to be sure I am not saying some 'BULL')
>
>
> $var = 0;
>
> if($var)
> echo '<P>var matched';
>
> if(isset($var))
> echo '<P>var is set';
>
>
> when the $var is 0 the second condition will return true, the first will
be
> false instead...
> Obviously if they enter anything else then 0 and NULL (I mean nothing) it
> will return true in both cases, if($var.., if(isset($var... if(strle($var
> ...
>
> What's wrong with isset() in here?
> I am on PHP4.0.4!
>
> explain me again, why on user input strlen() would do better then isset()
?
>
>
> Sincerely,
>
> Maxim Maletsky
> Founder, Chief Developer
>
> PHPBeginner.com (Where PHP Begins)
> [EMAIL PROTECTED]
> www.phpbeginner.com
>
>
>
>
>
> -----Original Message-----
> From: Joe Stump [mailto:[EMAIL PROTECTED]]
> Sent: Saturday, February 24, 2001 4:25 PM
> To: PHPBeginner.com
> Cc: [EMAIL PROTECTED]
> Subject: Re: [PHP] isset()
>
>
> You're wrong in saying that you "usually know what the variable will be" -
> you
> never know what it's going to be. You aren't entering it.... you need to
> remember that mostly idiots are inputting the data :O)
>
> --Joe
>
> On Sat, Feb 24, 2001 at 04:17:02PM +0900, PHPBeginner.com wrote:
> > have I said it won't work, Joe?
> >
> > I said that using strlen() might not be necessary. (re-read my post)
> > On my own opinion the same things could be done without using the string
> > functions.
> > Am I wrong in something there? then thanks for correcting me - will know
> it
> > for the feature.
> >
> >
> > Sincerely,
> >
> > Maxim Maletsky
> > Founder, Chief Developer
> >
> > PHPBeginner.com (Where PHP Begins)
> > [EMAIL PROTECTED]
> > www.phpbeginner.com
> >
> >
> >
> >
> > -----Original Message-----
> > From: Joe Stump [mailto:[EMAIL PROTECTED]]
> > Sent: Saturday, February 24, 2001 4:17 PM
> > To: PHPBeginner.com
> > Cc: [EMAIL PROTECTED]
> > Subject: Re: [PHP] isset()
> >
> >
> > You are COMPLETELY wrong here. isset() is designed to check if a
variable
> is
> > SET - NOT if it has something in it. empty() is designed for strings NOT
> for
> > ints - so if it's set to 0 it will fail. Finally in PHP 4 + you have
> > problems
> > when you do checks and variables aren't set.
> >
> > I do this, like I said before, because the extra 1 billionth of a second
> is
> > worth the overhead. I've programmed for sites ranging from a few
hundered
> > hits
> > a day to a few million hits a day and this works ALL the time.
> >
> > --Joe
> >
> > On Sat, Feb 24, 2001 at 03:15:59PM +0900, PHPBeginner.com wrote:
> > > I don't agree with you in here,
> > >
> > > you usually know what kind of variable you're checking, so strlen()
will
> > > work just as well as
> > >
> > > $var ? 'OK' : 'Empty'
> > >
> > > will work or the isset() - common, it was made for checking the
> > variables -
> > > use it.
> > >
> > > strlen() is in fact an overhead, why would you allow your design to be
> > some
> > > sort of untraditional? I don't think there's any necessity for it
> > >
> > > a "good design" often would be something like this:
> > >
> > > $var = 'whatever';
> > >
> > > if($var)
> > > ...do this
> > > else
> > > ERROR('no var') // some your func to output the error mess or to
> continue
> > > with debugging
> > >
> > > in most cases it will work better and simpler for you without spending
> > these
> > > bazillions of important for every developer seconds.
> > >
> > >
> > >
> > > Sincerely,
> > >
> > > Maxim Maletsky
> > > Founder, Chief Developer
> > >
> > > PHPBeginner.com (Where PHP Begins)
> > > [EMAIL PROTECTED]
> > > www.phpbeginner.com
> > >
> > >
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: Joe Stump [mailto:[EMAIL PROTECTED]]
> > > Sent: Friday, February 23, 2001 3:07 AM
> > > To: Steve Edberg
> > > Cc: Jacky@lilst; [EMAIL PROTECTED]
> > > Subject: Re: [PHP] isset()
> > >
> > >
> > > I stand firm on strlen() for the following reasons ...
> > >
> > > if(!$var) will sometimes act strangely (has for me in the past) when
> > > variables
> > > are set to something other than what you are expecting.
> > >
> > > if(isset($var)) will return true if your text field is declared but
not
> > > filled
> > > in.
> > >
> > > if(empty($var)) will return true if $var is set to 0 (for obvious
> reason)
> > so
> > > is
> > > only good for certain instances.
> > >
> > > strlen() on the other hand converts the variable to a string and
returns
> a
> > > count
> > > of characters. It's never failed or acted funky. For this reason I use
> it
> > > religiously.
> > >
> > > Others might say "well it's extra overhead" to which I reply "I'll
take
> an
> > > extra
> > > bazillionth of a second to know for sure I have what I need"
> > >
> > > --Joe
> > >
> > > On Thu, Feb 22, 2001 at 08:18:22AM -0800, Steve Edberg wrote:
> > > > I would do this:
> > > >
> > > > if (!$AgeChild) $AgeChild = 'NA';
> > > >
> > > > More compact, easier to read (to me, anyway). This presumes that a
> > > > value of '' (empty string, interpreted by PHP as false) is NOT a
> > > > valid value here.
> > > >
> > > > As far as your sniplet goes, it is possible that there may be some
> > > > PHP type-casting issues here, depending on: whether $AgeChild is
> > > > numeric or string; the fact that the STRING "false" isn't equivalent
> > > > to the CONSTANT false, the use of == vs. ===.
> > > >
> > > > Time to check out the docs - specifically the types and variables
> > > > sections (also the functions->variables section)...
> > > >
> > > > - steve
> > > >
> > > >
> > > >
> > > > At 5:07 PM -0600 2/22/01, Jacky@lilst wrote:
> > > > >People
> > > > >I tried to check if teh field has set a vaule in it before submit
> > > > >using isset with the sniplet below
> > > > >
> > > > >if ((isset($AgeChild))=="false") {
> > > > >$AgeChild = "NA";
> > > > >}
> > > > >
> > > > >The resule is that it always displays NA whether or not it has
vaule
> > > > >in the field, what is the correct way of using isset for this
> > > > >purpose? Or should I use empty() ?
> > > > >Jack
> > > > >[EMAIL PROTECTED]
> > > > >"There is nothing more rewarding than reaching the goal you set for
> > > yourself"
> > > >
> > > >
> > > > --
> > > > +--- "They've got a cherry pie there, that'll kill
> > ya" ------------------+
> > > > | Steve Edberg University of California,
> Davis
> > |
> > > > | [EMAIL PROTECTED] Computer
> Consultant
> > |
> > > > | http://aesric.ucdavis.edu/
> http://pgfsun.ucdavis.edu/
> > |
> > > > +-------------------------------------- FBI Special Agent Dale
> > Cooper ---+
> > > >
> > > > --
> > > > PHP General Mailing List (http://www.php.net/)
> > > > To unsubscribe, e-mail: [EMAIL PROTECTED]
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> > > > To contact the list administrators, e-mail:
> [EMAIL PROTECTED]
> > >
> > > --
> > >
> >
>
> --------------------------------------------------------------------------
> > --
> > > ---
> > > Joe Stump, PHP Hacker,
> > > -o)
> > > http://www.miester.org http://www.care2.com
> > > /\\
> > > "It's not enough to succeed. Everyone else must fail" -- Larry Ellison
> > > _\_V
> >
>
> --------------------------------------------------------------------------
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> > >
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> >
> > --
> >
>
> --------------------------------------------------------------------------
> --
> > ---
> > Joe Stump, PHP Hacker,
> > -o)
> > http://www.miester.org http://www.care2.com
> > /\\
> > "It's not enough to succeed. Everyone else must fail" -- Larry Ellison
> > _\_V
>
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> >
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> --
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--
> ---
> Joe Stump, PHP Hacker,
> -o)
> http://www.miester.org http://www.care2.com
> /\\
> "It's not enough to succeed. Everyone else must fail" -- Larry Ellison
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-o)
http://www.miester.org http://www.care2.com
/\\
"It's not enough to succeed. Everyone else must fail" -- Larry Ellison
_\_V
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