使用 PHP 创建一个 bibtex 档案

Question

我正在尝试创建一个代码，该代码基于来自 BD 的信息创建一个 bibtex 存档。这就是我得到的：

<?php
include("classe/conexao.php");

session_start();
$_SESSION[id_tese_especifica] = $_GET['id'];

$result = pg_query("SELECT titulo, id, data, autor_nome FROM teses ORDER BY data DESC");
$arr = pg_fetch_array($result);

echo "@phdthesis{phpthesis,
  author={" . $arr[0] . "},
  title={" . $arr[6] . " " . $arr[3] . "},
  month={" . $arr[2] . "}";

$name = $_GET['id'] . ".bib";
$file = fopen($name, 'a');
$text = "test (it doesn't appears on archive and I don't know why, so I used the echo above and worked, but this is what should be on archive, or isn't?)";
fwrite($file, $text);

readfile($file);
fclose($fp);

header('Content-Disposition: attachment; filename="' . $file . '"');
header('Expires: 0');

?>

之后，它会下载一个名为 'Resource id #6' 的存档，为什么？名称应基于此：$name = $_GET['id'] . ".bib".

谢谢！

Answer 1

因为文件名存储在代码中的 $name 变量中：

header('Content-Disposition: attachment; filename="' . $name . '"');

而$file变量是一个资源，与打开的文件相关联。

顺便说一下 - 您没有正确关闭文件。

fclose($fp); // $fp is NOT defined, your pointer is in $file variable

关闭的正确代码是：

fclose($file);

下一步，重新排列你的代码。首先 - headers 应该发送 BEFORE 任何输出。您目前遇到的是一些错误的混合，它们意外地向您展示了您想要的东西。

正确的代码应该是：

$name = $_GET['id'] . ".bib"; 
// first of all - set proper headers:
header('Content-Disposition: attachment; filename="' . $name . '"');
header('Expires: 0');

// next - do a query
$result = pg_query("SELECT titulo, id, data, autor_nome FROM teses ORDER BY data DESC");
$arr = pg_fetch_array($result);

// use echo for testing purposes only
// cause echo considered as a content of your file
echo "@phdthesis{phpthesis,
    author={" . $arr[0] . "},
    title={" . $arr[6] . " " . $arr[3] . "},
    month={" . $arr[2] . "}";

$fp = fopen($name, 'a');
$text = "test (it doesn't appears on archive and I don't know why, so I used the echo above and worked, but this is what should be on archive, or isn't?)";
fwrite($fp, $text);
fclose($fp);   // don't forget to close file for saving newly added data

readfile($name);   // readfile takes a filename, not a handler.
die();    // end your script cause in other case all other data will be outputted too

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