| Re: How to construct an associative and numeric indexable array [message #178279 is a reply to message #178278] |
Sat, 26 May 2012 13:43   |
Leonardo Azpurua
Messages: 46
Registered: December 2010
Karma:
|
Member |
|
|
"Michael Fesser" <netizen(at)gmx(dot)de> escribió en el mensaje
news:4od1s7lf3ach6e28sqh9gs5d02u7oqcpmj(at)mfesser(dot)de...
> .oO(Leonardo Azpurua)
>
>> Ok... forget SQLSRV. It was just the source (not the object) of my
>> question.
>>
>> Let's say I have an array $arr, constructed thus:
>>
>> $arr = array("one" => "X", "two"=>"Y", ..., "umpt" =>"ZZZZZ");
>>
>> so that I can get $arr["one"] or $arr["umpt"].
>>
>> Now, at some moment, I want to obtain the (n+1)th value in the array. I
>> just
>> can't write $arr[$n];
>>
>> I know I might write:
>> $k = array_keys($arr);
>> $x = $arr[$k[$n]];
>>
>> But when you use the array returned by sqlsrv_fetch_array, you can either
>> write $arr["C1"] or $arr[0].
>>
>> Do you know how they do that?
>
> Such an array contains all values twice. There's no direct way to access
> an element with an associative key also by a numeric index. For doing
> that you would have to loop through the array until you've reached the
> element you want.
So that's how they do it!
I just checked and in fact count($row) yields twice the number of columns in
the result set.
And it is anything but appealing as a "general" solution.
You also saved me from stumbling against "for ($n = 0; $n < count($row);
$n++)", which would have happened sooner than later.
Thanks!
--
|
|
|
|
Calendar
Search
Help
Members
Register
Login
Home
]