CSV在导入文件时，我需要处理任何错误。我需要实现的是显示成功上传的总行数和错误（如果有）。
下面是我需要显示的线框图像
以下是我目前正在使用的代码：
include_once("db_connect.php");
if(isset($_POST['import_data'])){
// validate to check uploaded file is a valid csv file
$file_mimes = array('text/x-comma-separated-values', 'text/comma-separated-values', 'application/octet-stream', 'application/vnd.ms-excel', 'application/x-csv', 'text/x-csv', 'text/csv', 'application/csv', 'application/excel', 'application/vnd.msexcel', 'text/plain');
if(!empty($_FILES['file']['name']) && in_array($_FILES['file']['type'],$file_mimes)){
if(is_uploaded_file($_FILES['file']['tmp_name'])){
$csv_file = fopen($_FILES['file']['tmp_name'], 'r');
//fgetcsv($csv_file);
// get data records from csv file
while(($emp_record = fgetcsv($csv_file)) !== FALSE){
// Check if employee already exists with same email
$c++;
if($c != "1"){
$sql_query = "SELECT emp_id, emp_name, emp_salary, emp_age FROM emp WHERE emp_email = '".$emp_record[2]."'";
$resultset = mysqli_query($conn, $sql_query) or die("database error:". mysqli_error($conn));
// if employee already exist then update details otherwise insert new record
if(mysqli_num_rows($resultset)) {
$import_status = '?import_status=exists';
} else{
$mysql_insert = "INSERT INTO emp (emp_name, emp_email, emp_salary, emp_age )VALUES('".$emp_record[1]."', '".$emp_record[2]."', '".$emp_record[3]."', '".$emp_record[4]."')";
mysqli_query($conn, $mysql_insert) or die("database error:". mysqli_error($conn));
$import_status = '?import_status=success';
}
}
}
fclose($csv_file);
} else {
$import_status = '?import_status=error';
}
} else {
$import_status = '?import_status=invalid_file';
}
}
header("Location: upload_employee_data_open_link.php".$import_status);