[英]Using PHP ftp_get() to retrieve file with wildcard filename
I have a file on an FTP with a dynamic filename.我在 FTP 上有一个动态文件名的文件。 The schema looks something like:
架构看起来像:
ABCD_2_EFGH_YYMMDD_YYMMDD_randomnumber_.TXT
The dates ( YYMMDD
) reflect the previous day and current day and the randomnumber
value is a count of the records in the file and varies each day.日期 (
YYMMDD
) 反映前一天和当天, randomnumber
数值是文件中记录的计数,每天都在变化。
I am attempting to retrieve the file using PHP but I am having trouble using a wildcard name.我正在尝试使用 PHP 检索文件,但在使用通配符名称时遇到问题。 Here is a sample of the code:
下面是代码示例:
<?php
$yesterday = strtotime('-1 day', time());
$today = strtotime('-0 day', time());
$local_file = "ABCD_2_EFGH__".date('Y-m-j', $yesterday).".txt";
$server_file = "ABCD_2_EFGH_".date('ymd', $yesterday)."_".date('ymd', $today)."_*.txt";
$conn_id = ftp_connect(ftpaddress);
$login_result = ftp_login($conn_id, 'username', 'password');
ftp_chdir($conn_id, 'subdirectory name');
ftp_get($conn_id, $local_file, $server_file, FTP_BINARY);
?>
When running this code i get the following error:运行此代码时,我收到以下错误:
ftp_get() expects parameter 3 to be a valid path
ftp_get() 期望参数 3 是有效路径
I have also tried using glob()
for $server_file
and receive the same error.我也尝试将
glob()
用于$server_file
并收到相同的错误。
Does anyone know how to use dynamic filenames with ftp_get()
?有谁知道如何在
ftp_get()
使用动态文件名?
You can use ftp_nlist
with pattern to retreive file names from ftp folder.您可以使用带有模式的
ftp_nlist
从 ftp 文件夹中检索文件名。 And then use ftp_get
in loop然后在循环中使用
ftp_get
$fileList = ftp_nlist($conn_id, 'subdirectory_name/file_prefix_*.txt');
for ($i = 0; $i < count($fileList); $i++) {
$localFile = tempnam(sys_get_temp_dir(), 'ftp_in');
if (ftp_get($conn_id, $localFile, $fileList[$i], FTP_BINARY)){
//do something
}
}
The ftp_get
can be used to download a single file only. ftp_get
只能用于下载单个文件。 No wildcards are supported.不支持通配符。
The only reliable way is to list all files, filter them locally and then download them one-by-one:唯一可靠的方法是列出所有文件,在本地过滤它们,然后一一下载:
$conn_id = ftp_connect("ftp.example.com") or die("Cannot connect");
ftp_login($conn_id, "username", "password") or die("Cannot login");
ftp_pasv($conn_id, true) or die("Cannot change to passive mode");
$files = ftp_nlist($conn_id, "/path");
foreach ($files as $file)
{
if (preg_match("/\.txt$/i", $file))
{
echo "Found $file\n";
// download with ftp_get
}
}
Some (most) servers will allow you to use a wildcard directly:一些(大多数)服务器将允许您直接使用通配符:
$conn_id = ftp_connect("ftp.example.com") or die("Cannot connect");
ftp_login($conn_id, "username", "password") or die("Cannot login");
ftp_pasv($conn_id, true) or die("Cannot change to passive mode");
$files = ftp_nlist($conn_id, "/path/*.txt");
foreach ($files as $file)
{
echo "Found $file\n";
// download with ftp_get
}
But that's a nonstandard feature (while widely supported).但这是一个非标准功能(虽然得到广泛支持)。
For details see my answer to FTP directory partial listing with wildcards .有关详细信息,请参阅我对使用通配符的 FTP 目录部分列表的回答。
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