+1 for variable_exists
Cristiano Duarte
"Lars Torben Wilson" <[EMAIL PROTECTED]> escreveu na mensagem
news:[EMAIL PROTECTED]
> On Thu, 2003-08-14 at 08:42, Andi Gutmans wrote:
> > I am not really convinced either that variable_exists() is
> > function_exists() parallel.
> > Under what circumstanc
On Thu, 2003-08-14 at 12:41, Derick Rethans wrote:
> On Thu, 14 Aug 2003, walt boring wrote:
>
> > Then please explain the logic of why
> > $var = null
> >
> > isset($var) returns false.
> >
> > In your words "it will see if a variable is set (has a value)".
> >
> > $var IS set and DOES have a
On August 14, 2003 03:33 pm, Robert Cummings wrote:
> Actually isset() doesn't behave as it should:
>
> $foo = null;
> echo isset( $foo );
Not quite. To understand the nature of NULL you must consider the following.
Suppose you have a variable $foo you wish to 'destroy' you can do so by d
On Thu, 2003-08-14 at 13:17, Mårten Gustafson wrote:
> Lars Torben Wilson ([EMAIL PROTECTED]) wrote:
> > unset($foo) is not the same as $foo = NULL, which is one way this
>
> According to the manual, it is.
> http://www.php.net/manual/en/language.types.null.php
>
> /mårten.
According to the behav
Not quite. To understand the nature of NULL you must consider the following.
Suppose you have a variable $foo you wish to 'destroy' you can do so by doing
unset($foo) or $foo = NULL;. In both cases the value of $foo will be
destroyed, however the variable will remain, it's value will become NU
On Thu, 2003-08-14 at 12:59, Ilia Alshanetsky wrote:
> On August 14, 2003 03:33 pm, Robert Cummings wrote:
> > Actually isset() doesn't behave as it should:
> >
> > $foo = null;
> > echo isset( $foo );
>
> Not quite. To understand the nature of NULL you must consider the following.
> Supp
On Thu, 2003-08-14 at 08:42, Andi Gutmans wrote:
> I am not really convinced either that variable_exists() is
> function_exists() parallel.
> Under what circumstances is this needed?
>
> Andi
The followup I sent to Ilia gives examples of how this patch can be
used to determine whether, for insta
I am not really convinced either that variable_exists() is
function_exists() parallel.
Under what circumstances is this needed?
Andi
At 03:18 PM 8/14/2003 +0200, [EMAIL PROTECTED] wrote:
"Lars Torben Wilson" <[EMAIL PROTECTED]> a écrit dans le message de
news:[EMAIL PROTECTED]
> Hi out there,
>
On Thu, 14 Aug 2003, walt boring wrote:
> Then please explain the logic of why
> $var = null
>
> isset($var) returns false.
>
> In your words "it will see if a variable is set (has a value)".
>
> $var IS set and DOES have a value, it just happens to be a value of null.
I've done a fair deal of
Ilia Alshanetsky wrote:
On August 14, 2003 03:11 pm, walt boring wrote:
exactly why isset() is either
1) a bad name for the function or
2) 'broken'
Wrong. isset() has a very proper name "is-set", which to me and other people
says that it will see if a variable is set (has a value). It doe
Actually isset() doesn't behave as it should:
$foo = null;
echo isset( $foo );
In the above it should return true, but doesn't because it considers
null to be not set. Thus it is flawed since I explicitly set it to null.
Understandably this is documented; however, the issue here is whethe
On August 14, 2003 03:11 pm, walt boring wrote:
> exactly why isset() is either
> 1) a bad name for the function or
> 2) 'broken'
Wrong. isset() has a very proper name "is-set", which to me and other people
says that it will see if a variable is set (has a value). It does this job
admirably and
Timm Friebe wrote:
On Thu, 2003-08-14 at 13:18, [EMAIL PROTECTED] wrote:
[...]
Hmm, I thought a variable is set even if its value is NULL?
Unfortunately it is not:
[EMAIL PROTECTED]:~ > php -r '$a= NULL; var_dump(isset($a));'
bool(false)
- Timm
exactly why isset() is either
1) a bad n
- Original Message -
From: "Andi Gutmans" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Thursday, August 14, 2003 5:42 PM
Subject: Re: [PHP-DEV] Re: variable_exists() patch
Yes in fact I'm not either. I'm not sure this
On Thu, 2003-08-14 at 13:18, [EMAIL PROTECTED] wrote:
[...]
> Hmm, I thought a variable is set even if its value is NULL?
Unfortunately it is not:
[EMAIL PROTECTED]:~ > php -r '$a= NULL; var_dump(isset($a));'
bool(false)
- Timm
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