Re: [chiPHPug-discuss] troublesome PHP behavior

[Trevor O. <tr...@gm...>]

It will return false if the DELIMITER is null, not if the string is null

2009/2/20 David Rovani <da...@ro...>

> I think it's returning what I would expect it to return.  Because PHP
> doesn't really differential between an empty string and a null string,
> then a string is a string.  Looking at the php manual for explode
> (http://php.net/explode):
> Return Values - If delimiter is an empty string (""), explode() will
> return FALSE. If delimiter contains a value that is not contained in
> string , then explode() will return an array containing string.
>
> So, in your case, it's returning $string back to you as the first
> element of the array... exactly as expected.
> Now, if $string was a null, uninitialized variable, perhaps you have a
> point, but I think it's pretty much working as intended.
>
> Perhaps a string-length check is appropriate in this circumstance
> before you explode the string?  Or, when you do a count($array) in a
> conditional, also do a len($string)?
> -Rovani
>
>
> (please don't take it as condescending... definitely not meant that way)
>
> On Fri, Feb 20, 2009 at 3:00 PM, Arlo Leach <ar...@ar...> wrote:
> > Hi folks,
> >
> > Consider the following PHP code, which explodes an empty string:
> >
> >    $string = "";
> >    $array = explode("|", $string);
> >    print_r($array);
> >    print "Length: ".count($array);
> >
> > I would expect this to output an empty array:
> >
> >    Array ( ) Length: 0
> >
> > But it actually outputs:
> >
> >    Array ( [0] => ) Length: 1
> >
> > Does anyone else find this odd? It has bitten me a few times lately, when
> I
> > test the existence of data with a count(), or try to process data with a
> FOR
> > loop. I end up writing this a lot to get the expected results:
> >
> >    $array = ($string) ? explode(",", $string) : array() ;
> >
> > I was considering logging a bug report but wondered what your thoughts
> were.
> >
> > Cheers,
> > -Arlo
> >
> > _______________________________
> >
> > Arlo Leach
> > 773.769.6106
> > http://arlomedia.com
> >
> >
> >
> >
> >
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-- 
-Trevor Oldak