写入 CSV 时出错 - 警告：fopen() [function.fopen]：文件名不能为空

Question

在我的网站上，用户填写表格进行注册，然后该信息将被添加到数据库中。我也试图将信息写入 CSV 文件。到目前为止，我的代码给了我这个错误：

警告：fopen（）[function.fopen]：

第122行的/home/content/m/a/t/matronryan/html/sendmail3.php中的文件名不能为空 第122行: $fp = fopen($filename, "w");

我不知道问题出在哪里。这是代码：

$first_name = $_POST['first_name']; // required
$last_name = $_POST['last_name']; // required
$email_from = $_POST['email']; // required
$stilldonate = $_POST['stilldonate']; // not required
$phone = $_POST['phone'];
$bid = $_POST['bid']; // required
$item = $_POST['item'];
$address1 = $_POST['address1']; // required
$address2 = $_POST['address2']; 
$city = $_POST['city'];
$county = $_POST['county']; // required
$postcode = $_POST['postcode']; // required
$updated = $_POST['updated']; 

include('db_functions.php');
    connect_to_db();
    $query="insert into auctionusers (firstname, lastname, address1, address2, city, county, postcode, email, phone, bid, stilldonate, item, updated) values ('$first_name', '$last_name', '$address1', '$address2', '$city', '$county', '$postcode', '$email_from', '$phone', '$bid', '$stilldonate', '$item', '$updated')";
    $result=mysql_query($query);


$filename == 'auctionusers.csv';
$fp = fopen($filename, "w");

$res = mysql_query("SELECT * FROM auctionusers");

// fetch a row and write the column names out to the file
$row = mysql_fetch_assoc($res);
$line = "";
$comma = "";
foreach($row as $name => $value) {
    $line .= $comma . '"' . str_replace('"', '""', $name) . '"';
    $comma = ",";
}
$line .= "\n";
fputs($fp, $line);

// remove the result pointer back to the start
mysql_data_seek($res, 0);

// and loop through the actual data
while($row = mysql_fetch_assoc($res)) {

    $line = "";
    $comma = "";
    foreach($row as $value) {
        $line .= $comma . '"' . str_replace('"', '""', $value) . '"';
        $comma = ",";
    }
    $line .= "\n";
    fputs($fp, $line);

}

fclose($fp);

mysql_close();


header('location: index2.php?op=Thank You&id=bid');

}
?>

任何人都可以看到出了什么问题吗？

Answer 1

更改

$filename == 'auctionusers.csv';

为：

$filename = 'auctionusers.csv';

Double equal 对变量执行布尔运算。您一定错误地添加了一个额外的等号。