mysql_num_rows(): error in wp-optimize-admin.php
error message in Database Tables Report:
mysql_num_rows(): supplied argument is not a valid MySQL result resource in … /wp-content/plugins/wp-optimize/wp-optimize-admin.php on line 343
This seems to be a general problem appearing sometimes in MySQL when you have a dash in the the database name. I solved it by changing line 341 in that wp-optimize-admin.php to
$local_query = 'SHOW TABLE STATUS FROM '. DB_NAME .';
(i.e. by adding “backticks” before and after DB_NAME. I hope they won’t convert here to markup.)
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