MySQL in WordPress 3.9

Gary Pendergast writes on Make WordPress Core:

In WordPress 3.9, we added an extra layer to WPDB, causing it to switch to using the mysqli PHP library, when using PHP 5.5 or higher.

For plugin developers, this means that you absolutely shouldn’t be using PHP’s mysql_*() functions any more – you can use the equivalent WPDB functions instead.

Great! :-)

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