Receiving error with Custom Tables plugin

Question

How to resolve this warning which is shown when I use the Custom Tables plugin? Can anybody help me please

Warning: Invalid argument supplied for foreach() in ..\wp-content\plugins\custom-tables\pages\show_table.php on line 378

Answer 1

A quick and dirty "fix" would be to change line 378 in that file and cast the $qry variable to an array. It should make the error go away, however, to fix the actual cause of the problem some refactoring may need to be done. You could drop the plugin author a note.

foreach ($qry as $row) {
// becomes:
foreach ((array) $qry as $row) {

Answer 2

Try this:

1. Login to your WordPress admin and visit the Plugins > Editor page
2. Select Custom tables from the drop-down list
3. Select the show_tables.php file from the right-hand panel.
4. Scroll down until you see this line: $qry = $wpdb->get_results($abfrage);
5. Change that line to: $qry = $wpdb->get_results($abfrage, ARRAY_A);

I can't guarantee that doing this will work; I haven't tested it myself just yet. I'll edit this answer when I have. Post a comment below if you cannot complete one of steps above, for whatever reason.