Question

我目前正在研究一个示例系统，该系统可以将csv文件上传到我的phpmyadmin MySQL数据库中。

这很奇怪，因为不再在phpmyadmin中插入任何数据。

我的代码以前曾经工作过，后来上传了几次数据。每次我上传csv时，都会出现以下错误：

注意：未定义变量：第43行的C：\ xampp \ htdocs \ intern \ orders.php中的sql

上传源代码：

<?php
$con = mysqli_connect('localhost','root','') or die (mysql_error());

mysqli_select_db($con, 'test');

$mimes = array('application/vnd.ms-excel','text/plain','text/csv','text/tsv');

if(isset($_POST['submit'])){
    $file = $_FILES['file']['tmp_name'];
    $handle = fopen($file,"r");
    $num = 0;

    if(in_array($_FILES['file']['type'],$mimes)){
        while(($fileop = fgetcsv($handle,2000,",")) !==false){
            if($num == 0){
                $num++;
            } 
            else{
                $KeyAccount = $fileop[0];
                $BatchNumber= $fileop[1];
                $Product = $fileop[2];
                $Quantity = $fileop[3];
                $PO = $fileop[4];
                $DateRequested = $fileop[5];
                $DateDelivered = $fileop[6];
                $Status = $fileop[7];
                $Serial = $fileop[8];
                $Voucher = $fileop[9];
                $DateExpiry = $fileop[10];
                $sql = mysqli_query($con, "INSERT INTO orders (KeyAccount,BatchNumber,Product,Quantity,PO,DateRequested,DateDelivered,Status,Serial,Voucher,DateExpiry) VALUES ('$KeyAccount','$BatchNumber','$Product','$Quantity','$PO','$DateRequested','$DateDelivered','$Status','$Serial','$Voucher','$DateExpiry')");
            }
        }
    } 

    else {
        echo '<script language="javascript">';
        echo 'alert("INVALID FILE FORMAT.")';
        echo '</script>';
        die(header( "refresh:0;" ));

    }

    if($sql){
        echo '<script language="javascript">';
        echo 'alert("Successfully Inserted.")';
        echo '</script>';
    }
    else{
        echo "error";
    }
}

?>

感谢进阶！

Answer 1

只需在此条件if（isset（$ _ POST ['submit']）））之前定义此$ sql变量

$sql='';

if(isset($_POST['submit']))

Answer 2

如果未上传任何文件，它将不会进入IF条件，并且不会声明$sql变量。您可以进行以下更改并解决问题：

如果要检查文件的条件，请先将以下完整代码移入内部：

if(in_array($_FILES['file']['type'],$mimes)){
    while(($fileop = fgetcsv($handle,2000,",")) !==false){
        if($num == 0){
            $num++;
        } 
        else{
            $KeyAccount = $fileop[0];
            $BatchNumber= $fileop[1];
            $Product = $fileop[2];
            $Quantity = $fileop[3];
            $PO = $fileop[4];
            $DateRequested = $fileop[5];
            $DateDelivered = $fileop[6];
            $Status = $fileop[7];
            $Serial = $fileop[8];
            $Voucher = $fileop[9];
            $DateExpiry = $fileop[10];
            $sql = mysqli_query($con, "INSERT INTO orders (KeyAccount,BatchNumber,Product,Quantity,PO,DateRequested,DateDelivered,Status,Serial,Voucher,DateExpiry) VALUES ('$KeyAccount','$BatchNumber','$Product','$Quantity','$PO','$DateRequested','$DateDelivered','$Status','$Serial','$Voucher','$DateExpiry')");
          if($sql){
            echo '<script language="javascript">';
            echo 'alert("Successfully Inserted.")';
            echo '</script>';
         }
         else{
            echo "error";
        }
      }
    }
}

Answer 3

您应该使用mysqli_effected_rows来验证插入了多少条记录。关于不插入，您需要检查文件是否正确读取，Wat插入语句以及是否抛出任何错误消息。

if(in_array($_FILES['file']['type'],$mimes)){
      $inteffectedRows  = 0;
        while(($fileop = fgetcsv($handle,2000,",")) !==false) {
                $KeyAccount = $fileop[0];
                $BatchNumber= $fileop[1];
                $Product = $fileop[2];
                $Quantity = $fileop[3];
                $PO = $fileop[4];
                $DateRequested = $fileop[5];
                $DateDelivered = $fileop[6];
                $Status = $fileop[7];
                $Serial = $fileop[8];
                $Voucher = $fileop[9];
                $DateExpiry = $fileop[10];
                $sql = mysqli_query($con, "INSERT INTO orders (KeyAccount,BatchNumber,Product,Quantity,PO,DateRequested,DateDelivered,Status,Serial,Voucher,DateExpiry) VALUES ('$KeyAccount','$BatchNumber','$Product','$Quantity','$PO','$DateRequested','$DateDelivered','$Status','$Serial','$Voucher','$DateExpiry')");
                $inteffectedRows += mysqli_effected_rows($con);

        }

        if( 0 < $inteffectedRows ) {
            echo '<script language="javascript">';
            echo 'alert("Successfully Inserted.")';
            echo '</script>';
        }
        else{
            echo "error";
        }

    }
    else {
        echo '<script language="javascript">';
        echo 'alert("INVALID FILE FORMAT.")';
        echo '</script>';
        die(header( "refresh:0;" ));

    }

PHP / MySQL-未定义的变量：上传文件时使用sql

3 个答案: