Saturday, March 16, 13

HI, I’M JOHN

• Founder @ 9seeds.com

• WordPress Developer

• Viva, Las Vegas

Saturday, March 16, 13

The ProblemYou’ve got database tables you

need to access from inside wordpress

Saturday, March 16, 13

What are my options?

• Convert all the data to custom post types

• Write some (potentially) janky direct database access queries in to your theme or plugin

• Or, you can check out $wpdb

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What is $wpdb?

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$wpdb

“WordPress provides a global variable, $wpdb, which is an instantiation of the

class already set up to talk to the WordPress database.”

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Let’s dig in!

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My Contacts

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Some Data

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First upWe need to tell WordPress

about our new table

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Adding our table

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Accessing our table data

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get_results()

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Which turns...

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Into...

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Adding data to our custom

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Start with a form

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Start with a form

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Check your nonce!

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... from the codex

All data in SQL queries must be SQL-escaped before the SQL query is executed to prevent against SQL injection attacks. This can be

conveniently done with the prepare method.

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query() and prepare()

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Our data added

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This is just the beginning!

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Resources

• http://codex.wordpress.org/Class_Reference/wpdb

• http://www.slideshare.net/vegasgeek

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Thank You!john@9seeds.com - @vegasgeek

Saturday, March 16, 13