在服务器上上传.txt文件时，我需要读取它，从第一行取第一行和这个字符串用于新文件名(重命名文件(。
例如，我有文件测试.txt并且在文件中有
First line - Username: DemoUser
我需要将test.txt重命名为DemoUser.txt并将此Demo.txt User重命名为存储在MySQL中
这是我的脚本
<?php
if (isset($_POST['submit']))
{
$filename = $_FILES["file"]["name"];
$file_basename = substr($filename, 0, strripos($filename, '.')); // get file extention
$file_ext = substr($filename, strripos($filename, '.')); // get file name
$filesize = $_FILES["file"]["size"];
$allowed_file_types = array('.doc','.docx','.rtf','.pdf', '.txt');
$file = fopen($_FILES["file"]["tmp_name"],"r");
$result = fgets($file);
$result = explode( ': ', preg_split( '(\r\n|\r|\n)', $result )[0] )[1];
fclose($file);
if (in_array($file_ext,$allowed_file_types) && ($filesize < 200000))
{
// Rename file
$newfilename = $result . $file_ext;
if (file_exists("users/" . $newfilename))
{
// file already exists error
echo "You have already uploaded this file.";
}
else
{
move_uploaded_file($_FILES["file"]["tmp_name"], "users/" . $newfilename);
echo "File uploaded successfully.";
}
}
elseif (empty($file_basename))
{
// file selection error
echo "Please select a file to upload.";
}
elseif ($filesize > 200000)
{
// file size error
echo "The file you are trying to upload is too large.";
}
else
{
// file type error
echo "Only these file typs are allowed for upload: " . implode(', ',$allowed_file_types);
unlink($_FILES["file"]["tmp_name"]);
}
}
?>