Re: [PHP-DEV] Hash Functions API

[Andi Gutmans]

At 01:40 AM 4/12/2001 -0400, Stig Sæther Bakken wrote:
>["Brian Foddy" <[EMAIL PROTECTED]>]
> > I've been looking everywhere for a good reference of how to read and
> > update arrays.  The Zend documentation
> > (www.zend.com/apidoc) has descriptions of how to create
> > an array, and how to add elements to it, but I can't find anything on how
> > to simply read the values of an array.
> >
> > Mostly I want to write two functions:
> > 1.  Accept a provided 2 dimensional array and loop through
> > every element, by primary index then an inner loop by the second index,
> > sequentially.  I need to extract from the array the two keys and the
> >value.  The keys will not be sequential, at least the primary.
> >
> > 2.  Build a 2-d array, basically the reverse of 1 above.  Build an array
> >  with specific primary and secondary indexes.  Again keys will not
> > be sequential.
> >
> > To make matters worse, I'd like the keys to be either integer or strings.
> >
> > I've looked through the zend_hash.h header, and a few functions look
> > likely (zend_hash_move_forward, zend_hash_get_current_key).
>
>Those are the ones you want, plus zend_hash_get_current_data.

Also check out the _ex() functions. They give you more features.
Andi


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Re: [PHP-DEV] Hash Functions API

[Stig Sæther Bakken]

["Brian Foddy" <[EMAIL PROTECTED]>]
> I've been looking everywhere for a good reference of how to read and
> update arrays.  The Zend documentation
> (www.zend.com/apidoc) has descriptions of how to create
> an array, and how to add elements to it, but I can't find anything on how
> to simply read the values of an array.
> 
> Mostly I want to write two functions:
> 1.  Accept a provided 2 dimensional array and loop through
> every element, by primary index then an inner loop by the second index,
> sequentially.  I need to extract from the array the two keys and the
>value.  The keys will not be sequential, at least the primary.
> 
> 2.  Build a 2-d array, basically the reverse of 1 above.  Build an array
>  with specific primary and secondary indexes.  Again keys will not
> be sequential.
> 
> To make matters worse, I'd like the keys to be either integer or strings.
> 
> I've looked through the zend_hash.h header, and a few functions look
> likely (zend_hash_move_forward, zend_hash_get_current_key).

Those are the ones you want, plus zend_hash_get_current_data.

> But its hard knowing if these are the best to use and exactly how to use
> them.
> 
> One more question, very simple.  What is the difference between
> zend_hash_find and quick_find?  I assume index_find lets me specify
> an integer (ie:  array[3] in C notation).

The only difference is that zend_hash_find is smart about numeric
string indexes.  For example, if the array has a key with the integer
value 4, doing zend_hash_find after the string key "4" will still find
it.  zend_hash_quick_find doesn't do this.

> Have I missed the docs on these functions somewhere?

I don't think so? :-)

 - Stig

-- 
  Stig Sæther Bakken <[EMAIL PROTECTED]>
  Fast Search & Transfer ASA, Trondheim, Norway

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[PHP-DEV] Hash Functions API

[Brian Foddy]

I've been looking everywhere for a good reference of how to read and
update arrays.  The Zend documentation
(www.zend.com/apidoc) has descriptions of how to create
an array, and how to add elements to it, but I can't find anything on how
to simply read the values of an array.

Mostly I want to write two functions:
1.  Accept a provided 2 dimensional array and loop through
every element, by primary index then an inner loop by the second index,
sequentially.  I need to extract from the array the two keys and the
   value.  The keys will not be sequential, at least the primary.

2.  Build a 2-d array, basically the reverse of 1 above.  Build an array
 with specific primary and secondary indexes.  Again keys will not
be sequential.

To make matters worse, I'd like the keys to be either integer or strings.

I've looked through the zend_hash.h header, and a few functions look
likely (zend_hash_move_forward, zend_hash_get_current_key).

But its hard knowing if these are the best to use and exactly how to use
them.

One more question, very simple.  What is the difference between
zend_hash_find and quick_find?  I assume index_find lets me specify
an integer (ie:  array[3] in C notation).

Have I missed the docs on these functions somewhere?
Thanks for help.
Brian



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