FUDforum
Fast Uncompromising Discussions. FUDforum will get your users talking.

Home » Imported messages » comp.lang.php » Fast/Easy way to extract a column from multi-dimensional array?
Show: Today's Messages :: Polls :: Message Navigator
Return to the default flat view Create a new topic Submit Reply
Fast/Easy way to extract a column from multi-dimensional array? [message #176831] Fri, 27 January 2012 20:08 Go to previous message
John Drako is currently offline  John Drako
Messages: 5
Registered: December 2011
Karma:
Junior Member
I'm looking for a way to get all the values from the column of a two
dimensional array.

For example, I have a query on a mysql database that returns 10 rows
from the database, I would like to quickly (read low cpu load) extract
all the IDs from all the rows returned to reuse in another query.

So let's say I use:

$arr = mysqli_fetch_all($result, MYSQLI_ASSOC);

and $arr looks like:

RecordID, name, last name, title
RecordID, name, last name, title
RecordID, name, last name, title
RecordID, name, last name, title
RecordID, name, last name, title
RecordID, name, last name, title
etc...

I need to get all the 'RecordID' from the results to reuse in other
queries.

Is there a built in PHP function (compiled code) to accomplish this?
I've read the definitions of all the functions related to arrays and if
it exists, I didn't find it.

The site is very busy and CPU cycles count. I'm trying to avoid left
joining three gigantic tables.
[Message index]
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: approaches to PHP-based application interface?
Next Topic: php+html mixup in displaying multidimensional array in html tables
Goto Forum:
  

-=] Back to Top [=-
[ Syndicate this forum (XML) ] [ RSS ]

Current Time: Fri Nov 22 22:36:24 GMT 2024

Total time taken to generate the page: 0.04510 seconds