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Post Revisions can significantly bloat the size of your database. Here’s how to change the default unlimited number of revisions to 5, by using this hack which needs to be placed into your theme’s functions.php file.
[php]
/*—————————————————————–
Set the post revisions unless the constant was set in wp-config.php
—————————————————————–*/
if (!defined(‘WP_POST_REVISIONS’)) define(‘WP_POST_REVISIONS’, 5);
[/php]
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