Question

修改

我已经上传了csv文件。但现在，我想更新上传的csv文件中的数据。如果csv数据已经存在于表中，我需要更新该数据，如果没有，我将作为新记录插入。这是我的代码

if(isset($_POST['import'])) { //import csv file into database
    if(isset($_FILES['csv']['name'])) {
        $file_type = explode('.',$_FILES['csv']['name']);
        if($file_type[1]=="csv") {
            $handle = fopen($_FILES['csv']['tmp_name'], "r");
            $data = array();
            while(($data=fgetcsv($handle,1000,",")) != FALSE ){
                    $id=$data[0];
                    $a = $data[1];
                    $b = $data[2];
                    $date = date('Y-m-d h:i:s',time());

                $sql = "CREATE TEMPORARY TABLE temp_table LIKE question;

                        LOAD DATA INFILE '$file_name'
                        INTO TABLE temp_table
                        fields terminated by ','
                        optionally enclosed by ''
                        lines terminated by '\r\n'
                        (id, question, ans_number, a_one, a_two, a_three, a_four, a_five); 

                        UPDATE question
                        INNER JOIN temp_table on temp_table.id = question.id
                        SET question.question = temp_table.question;

                        DROP TEMPORARY TABLE temp_table;";
                mysql_db_query($dbname, $sql)or die(mysql_error());
                $insert_id =  mysql_insert_id(); 
                echo "insert id: $insert_id<br/><br/>";
                exit();

                $count = 0;
                for($j=2;$j<count($data);$j++) {
                    $b_name = $data[$j];
                    $count++;
                    if($count == $b) {
                        $is_answer = yes;
                    }else {
                        $is_answer = no;
                    }
                    if($b_name != "") {
                        ***#I want to update and insert here***
                        $ans_sql = "INSERT INTO a_table(name,is_answer,id) VALUES('$b','$is_answer','$insert_id')";
                        mysql_db_query($dbname, $ans_sql);
                    }
                }
            }
            fclose($handle);
        }
    }
}

但我每次都得到错误

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'LOAD DATA INFILE 'Question.csv' INTO TABLE temp_table fields ter' at line 3

在我的csv文件中，我有这样的数据

id, question, ans_number, a_one, a_two, a_three, a_four, a_five

但是我想在问题表中添加问题，并附上相关的ID。其他数据将添加到另一个表中。

我不确定我的语法有什么问题。怎么解决呢？

如何在php中更新上传的csv文件中的不同表数据？

0 个答案: