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Re: mysql_fetch_array [message #169797 is a reply to message #169790]

Mon, 27 September 2010 07:15

The Natural Philosoph
Messages: 993
Registered: September 2010

Karma:

Senior Member

sheldonlg wrote:
> On 9/26/2010 7:44 AM, Captain Paralytic wrote:
>> On Sep 26, 12:36 am, MikeB<mpbr...@gmail.com> wrote:
>>> Captain Paralytic wrote:
>>>> On Sep 25, 9:28 pm, MikeB<mpbr...@gmail.com> wrote:
>>>> > I have the following code:
>>> <snip>
>>>
>>>> > What PHP magic is at work here?
>>>
>>>> > Thanks.
>>>
>>>> I can recommend reading:
>>>> http://php.net/manual/en/language.types.array.php
>>>
>>> I've read that page before, but only now the following sentence makes
>>> sense:
>>>
>>> "If a key is not specified for a value, the maximum of the integer
>>> indices is taken and the new key will be that value plus 1. If a key
>>> that already has an assigned value is specified, that value will be
>>> overwritten. "
>>
>> I was referring to the section just below headed:
>> "Creating/modifying with square bracket syntax"
>> but the paragraph that you mentioned certainly explains more of the
>> actual details.
>
> You know, that ("the maximum of the integer indices is taken and the new
> key will be that value plus 1") is possibly a misleading clause.
>
> For example:
>
> $results = array();
> $results[] = 'First One';
>
> Reading that clause, "the maximum of the integer indices is taken and
> the new key will be that value plus 1", one might expect the index of
> "First One" to be 1. In fact, of course, it is 0. IOW, if there is no
> index yet, then it doesn't add 1, but takes the first one as 0.
>
Ah, but the maximum index value of a non existent array is therefore
obviously -1. :-)

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[Message index]

		mysql_fetch_array By: MikeB on Sat, 25 September 2010 20:28
		Re: mysql_fetch_array By: Marious Barrier on Sat, 25 September 2010 21:08
		Re: mysql_fetch_array By: TechieOldFox on Sat, 25 September 2010 21:50
		Re: mysql_fetch_array By: Captain Paralytic on Sat, 25 September 2010 22:50
		Re: mysql_fetch_array By: MikeB on Sat, 25 September 2010 23:36
		Re: mysql_fetch_array By: Captain Paralytic on Sun, 26 September 2010 11:44
		Re: mysql_fetch_array By: sheldonlg on Sun, 26 September 2010 23:24
		Re: mysql_fetch_array By: The Natural Philosoph on Mon, 27 September 2010 07:15
		Re: mysql_fetch_array By: sheldonlg on Mon, 27 September 2010 12:23
		Re: mysql_fetch_array By: Hamish Campbell on Mon, 27 September 2010 07:44
		Re: mysql_fetch_array By: matt[1] on Mon, 27 September 2010 12:37
		Re: mysql_fetch_array By: MikeB on Mon, 27 September 2010 13:18
		Re: mysql_fetch_array By: Captain Paralytic on Mon, 27 September 2010 13:35
		Re: mysql_fetch_array By: MikeB on Mon, 27 September 2010 14:12

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