Comments on: WordPress Database Functions

By: dameer

dameer — Thu, 04 Feb 2010 13:45:10 +0000

Just wanted to share something...
Let's suppose you've created brand new table for the purpose of a plugin and want to insert some data. The following will not work:
$wpdb->insert( $wpdb->my_new_table, array( 'post_title' => $mytitle ) );
...you have to do it this way:
$wpdb->insert( $wpdb->prefix . 'my_new_table', array( 'post_title' => $mytitle ) );
Hopefully people will find it useful.

By: Tsalagi

Tsalagi — Fri, 22 Jan 2010 22:14:33 +0000

Thanks for providing these functions. I am very interested in using these types of functions to add more functionality to my site. Where can I learn more information about how to put together such functions and where to use the syntax. For instance your use of get_var at the very beginning has an x and a x but it says get a single variable. What is the x and y for? And where can I learn about your use of absint,, prepare, escape and SET? Are these mysql query techniques or WordPress stuff? I sure would like to find a full fledged tutorial breaking all this stuff down so I can actually learn something other than how to copy and paste.

By: Simon

Simon — Tue, 08 Dec 2009 08:53:20 +0000

Googling $wpdb brings up few resources relating to this rather useful set of wordpress functions. While the wordpress codex does provide some extensive coverage it isn't laid out as simple as this for those out there who may be new to php or those who need a quick and simple reference list. Nice one.

By: Dominic

Dominic — Mon, 26 Oct 2009 22:55:30 +0000

Thanks for posting this. I've been hand-coding all of my plugin SQL.

By: Ben

Ben — Fri, 23 Oct 2009 21:35:39 +0000

I second that, this is the best resource with examples that I could find online. More useful than the wordpress codex page. thanks!

By: FreewareMatter

FreewareMatter — Tue, 20 Oct 2009 13:07:54 +0000

Very good post. I've searched documents about $wpdb class, but there's no "full" document. This post helps me very much. Thank you.

By: WordPress’s WPDB Class

WordPress’s WPDB Class — Wed, 14 Oct 2009 02:56:52 +0000

[...] can find a nice introduction and examples at WP Engineer. Here’s a sample of how you would go about changing the title of a post with a certain [...]