使用 laravel eloquent 创建数据库记录时出现查询异常

Question

I am encountering a weird error. In a laravel project I am reading a CSV file. In my Controller I am parsing the CSV and creating database records for a mysql database . I convert the CSV lines into individual arrays which are located within a big array -> two dimensional array. So far so good. When iterating through my array the first iteration works just fine and I get the database records as expected. However, during the second iteration a Query Exception is thrown. The stack trace leads me to a line where I am assigning a double value to an attribute of the model.

          Transaction::firstOrCreate([
            'date' => $date,
            'transaction_type' => $the_big_array[$i][2],
            'db_counter_party_id' => $db_counter_party_id,
            'amount' => $amount,
            'currency' => $the_big_array[$i][6],
            'usage' => $the_big_array[$i][7],
            'category' => "none",
            'balance' => $balance_after_transaction,
          ]);

The last assignment is causing the error. The variable balance_after_transaction is of type double and calculated according to previous transactions. So it is not directly retrieved from the CSV. Does someone have a clue what is going on?

Answer 1

The error was caused by a wrong character encoding.