Question

在截断表格之前，有人可以帮我让这个脚本检查文件是否存在。如果filename不存在，我想停止导入。

<?php
//set the connection variables
$hostname = "host";
$username = "username";
$password = "pass";
$database = "database";
$filename = "filename.csv";

//connect to mysql database
$connection = mysqli_connect($hostname, $username, $password, $database) or die("Error " . mysqli_error($connection));

mysqli_query($connection, "TRUNCATE TABLE `my_tablename`");

// open the csv file
$fp = fopen($filename,"r");

//parse the csv file row by row
while(($row = fgetcsv($fp,"500",",")) != FALSE)
{
    //insert csv data into mysql table
    $sql = "INSERT INTO Pristabell (Produkt, Pris, Rabattkr, Rabattprosent, Lagerstatus, Butikk, TAGS) VALUES('" . implode("','",$row) . "')";
    if(!mysqli_query($connection, $sql))
    {
        die('Error : ' . mysqli_error($conection));
    }
}
fclose($fp);

//close the db connection
mysqli_close($connection);

?>

谢谢： - ）

Answer 1

http://php.net/manual/en/function.file-exists.php

if(file_exists($pathtofile)){
 //do import
}else{
//stop
}

Answer 2

一个简单的解决方案是使用

file_exist;

在if（）块中。

在while（）之前，如果为true，则继续退出或抛出异常。

PHP：在truncate table之前检查文件是否存在

2 个答案: