with all respect to the people who develop the language, I
think this is nonsense:
$rs = mysql_query( 'select x, y, z from foo where ...' ) ;
$x = mysql_fetch_array( $rs , MYSQL_NUM ) ;
var_dump( $x[2] ) ;
var_dump( isset( $x[2] ) ) ;
NULL # well, the column contains null values
bool(false)
But since (almost) everybody else disagrees, I must be missing
something obvious.
BTW, does $x = null really equal to unset( $x ) or does
isset() just get fooled by its value?
At 01:55 7.2. 2001, André Langhorst wrote the following:
--------------------------------------------------------------
>>Perhaps, in order to maintain compatibility, we should re-document is_set,
>>create the documentation for is_null, and look into creating a new function
>>that will determine if something has "ever been inside the namespace", regardless
>>of its current value, or absence of value.
>
>we should just define (and document) this similar to Andrei (note, I do not use the
>word "the same" I use that word equal, what means different things):
>
>NULL equals absence_of_value equals absence_of_variable_in_namespace
>
>I can imagine no case where people would need to differentiate between NULL and never
>been in namespace, we should not allow this, otherwise we would introduce the
>differentiation into a third state, non existent, what raises the wtf-factor and is
>not required as far as I can think
>
>andré
>
>
>--
>· André Langhorst · t: +49 571 3201801 ·
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>· PHP Quality Assurance · http://qa.php.net ·
>
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____________________________________________________________
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A member of a group of ancient Greek philosophers who taught
that virtue constitutes happiness and that self control is
the essential part of virtue.
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