I refresh the PHP page directly and can delete the numeric fields in the MYSQL database, but cannot delete the letter or URL fields?

Question

I refresh the PHP page directly and can delete the numeric fields in the MYSQL database, but I cannot delete the letters or URL fields

Answer 1

Your two variable names are the same, the second one $erweima overwrites the first one. If you want to delete both, the SQL statement should be changed to

 dele te from sbm weher ewm= $erweima1  and ewm=$erweima2