PHP – Converting elements to actual values

You didn’t include value in your checkboxes you have:

'<input type="checkbox" name="Num1[]" />' . $Thing1->Product1 . "<br />";

Should be:

'<input type="checkbox" name="Num1[]" value="' . $Thing1->Product1 . '" />' . $Thing1->Product1 . "<br />";

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