尝试从 CSV 中获取数据以使用 PHP 插入 mysql，读取但它不存储在数据库中

Question

所以我想从包含

的 CSV 文件中导入数据

name, lastname, age

我已成功导入数据并从每一列中获取数据，但由于某种原因未能成功存储信息：

我的代码如下：

<?php

class csv extends mysqli
{
    private $state_CSV = false; //Validate the status of the CSV file

    public function __construct()
    {
        parent::__construct("localhost","root","","database");
        if ($this->connect_error) {
            echo "Fail to connect to Database : ". $this->connect_error;
        }
    }

    //import file in to read all data one by one
    public function import ($file)
    {
      if (($file = fopen ($file,'r')) !==FALSE) //r = read
      {
        while (($row = fgetcsv($file,1000,",")) !== FALSE) {

                /* you will need process the row*/ 
                $fullname = $row[0] ;
                $lastname = $row[1];
                $age = $row[2];

                //separate firstname and middle name
                $name = explode(" ", $fullname);
                $firstname = $name[0]; // piece1
                $middlename = $name[1]; // piece2//explode firstname

                //make first letter capital
                $lastname = ucfirst(strtolower($lastname));

                //Insert value into the database
                $q = "INSERT INTO file (first,middle,last,age) VALUES (".$firstname.",".$middlename.",".$lastname.",".$age.")";

                    echo $q;        //open here to show what the query look like

                if ( $this->query($q)){
                    $this->state_CSV = true;    //if the query run perfectly

                }else{
                    $this->state_CSV = false; //if is not run perfectly
                }
            }
                //showing notification, problem 

                if ($this->state_CSV) {
                echo "Your data has been successfully imported";
                }else{
                echo "Something went wrong while importing your data";
            }
        }
    }
}
?>

它一直显示错误消息并且不记录 csv 文件中的任何数据

Answer 1

欢迎使用 Whosebug。由于 firstname、middlename 和 last name 可能是 SQL 中的 char 类型，因此在插入时它们需要单引号。使用您的语法，应该这样做：

$q = "INSERT INTO file (first,middle,last,age) VALUES ('".$firstname."','".$middlename."',"'.$lastname."',".$age.")";

此处一个好的调试方法是将您回显的 $q 值粘贴到 SQL 工具或命令行中并执行它。

尝试从 CSV 中获取数据以使用 PHP 插入 mysql，读取但它不存储在数据库中

Try getting data from CSV to insert in mysql using PHP, Read but it is not storing in the database

php

mysql

fgetcsv