[wp-hackers] What do the key's mean on wp_attachment_metadata

Ryan Scheuermann ryan at concept64.com
Wed Jun 7 12:42:45 GMT 2006

Hi Mark,

That value is a serialized (string-version) of an array.  Those numbers 
are the number of bytes (characters) for the following value.  To pull 
the data out, just unserialize the value as an array.  If you follow me?

Ryan Scheuermann

Concept 64, Inc. | Phone: 610.349.0703 | Web: www.concept64.com

Mark Harwood wrote:
> Hi there,
> Im currently trying to rack my brain around the way that a post's 
> attached files work, ive figured out what data needs to be pulled from 
> the database but im stuck on understanding what some of the values in 
> wp_attachment_metadata mean.
> Below is a link to the wp_attachment_metadata for 3 images uploaded to 
> a post
> http://wilcoding.xs4all.nl/Wilco/Pastecode/2992/showpaste.aspx
> As you can see almost all the key's are the same before the values, 
> apart from two of them  s:22 changes to s:23 and s:89 to s:87
> Why is this? and what do each of these represent?
> Im just trying to understand them a bit more before i go off and do 
> some regex's to pull out the data i need.
> Many thanks
> Mark 'Phunky' Harwood
> Founder of EuroCSS.NET and mEm-Gaming.co.uk
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