This is a handy feature that took a little while to figure out, but’s nice when WordPress is throwing you a blank page and you can’t figure out why.
To enable WordPress debugging on either MU or the standard version open up the wp-config.php file.
Add the code around line 100 (actually, this part doesn’t matter, but just a suggestion to keep wp-config.php organized):
// Turn Debugging On
define('WP_DEBUG',true);
To turn off debugging, just comment out the define line or change it to false (should work, never tried changing it to false yet).
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Keywords: WordPress, WordPress MU, Enable Debugging, Disable Debugging, Debug, WordPress PHP Error, PHP Error’s, PHP Errors, Turn on php error debugging
