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
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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
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