我有一个脚本，用于检查包含许多匹配的PDF +文本文件的zip文件。我想解压缩，或者以某种方式从zip文件中读取文本文件，然后从文本文件中挑选出一些信息，以查看文件版本是否正确。
我正在查看该函数以找到一个等效的函数来制作tempdir，但也许有人有更好的解决方案来解决这个问题。tempnam()
索引文件如下所示。（用于 TAB 字符）。我已经制作了从文本文件中提取版本并检查其是否正确的函数，它只是解压缩，tmpdir或其他一些解决方案。->
1000->filename->file version->program version->customer no->company no->distribution
2000->pagenumber->more info->more info->...
非常简单（我从PHP手册中部分获取了它）：
<?php
function tempdir() {
$tempfile=tempnam(sys_get_temp_dir(),'');
// tempnam creates file on disk
if (file_exists($tempfile)) { unlink($tempfile); }
mkdir($tempfile);
if (is_dir($tempfile)) { return $tempfile; }
}
/*example*/
echo tempdir();
// returns: /tmp/8e9MLi
请参见： https://www.php.net/manual/en/function.tempnam.php
请看下面的Will的解决方案。
=>我的答案不应该再被接受了。
因此，我首先在 PHP.net 上找到了Ron Korving的一篇文章，然后我对其进行了修改，使其更安全（来自无休止的循环，无效字符和不可写的父 dirs），并使用更多的熵。
<?php
/**
* Creates a random unique temporary directory, with specified parameters,
* that does not already exist (like tempnam(), but for dirs).
*
* Created dir will begin with the specified prefix, followed by random
* numbers.
*
* @link https://php.net/manual/en/function.tempnam.php
*
* @param string|null $dir Base directory under which to create temp dir.
* If null, the default system temp dir (sys_get_temp_dir()) will be
* used.
* @param string $prefix String with which to prefix created dirs.
* @param int $mode Octal file permission mask for the newly-created dir.
* Should begin with a 0.
* @param int $maxAttempts Maximum attempts before giving up (to prevent
* endless loops).
* @return string|bool Full path to newly-created dir, or false on failure.
*/
function tempdir($dir = null, $prefix = 'tmp_', $mode = 0700, $maxAttempts = 1000)
{
/* Use the system temp dir by default. */
if (is_null($dir))
{
$dir = sys_get_temp_dir();
}
/* Trim trailing slashes from $dir. */
$dir = rtrim($dir, DIRECTORY_SEPARATOR);
/* If we don't have permission to create a directory, fail, otherwise we will
* be stuck in an endless loop.
*/
if (!is_dir($dir) || !is_writable($dir))
{
return false;
}
/* Make sure characters in prefix are safe. */
if (strpbrk($prefix, '\\/:*?"<>|') !== false)
{
return false;
}
/* Attempt to create a random directory until it works. Abort if we reach
* $maxAttempts. Something screwy could be happening with the filesystem
* and our loop could otherwise become endless.
*/
$attempts = 0;
do
{
$path = sprintf('%s%s%s%s', $dir, DIRECTORY_SEPARATOR, $prefix, mt_rand(100000, mt_getrandmax()));
} while (
!mkdir($path, $mode) &&
$attempts++ < $maxAttempts
);
return $path;
}
?>
因此，让我们尝试一下：
<?php
echo "\n";
$dir1 = tempdir();
echo $dir1, "\n";
var_dump(is_dir($dir1), is_writable($dir1));
var_dump(rmdir($dir1));
echo "\n";
$dir2 = tempdir('/tmp', 'stack_');
echo $dir2, "\n";
var_dump(is_dir($dir2), is_writable($dir2));
var_dump(rmdir($dir2));
echo "\n";
$dir3 = tempdir(null, 'stack_');
echo $dir3, "\n";
var_dump(is_dir($dir3), is_writable($dir3));
var_dump(rmdir($dir3));
?>
结果：
/var/folders/v4/647wm24x2ysdjwx6z_f07_kw0000gp/T/tmp_900342820
bool(true)
bool(true)
bool(true)
/tmp/stack_1102047767
bool(true)
bool(true)
bool(true)
/var/folders/v4/647wm24x2ysdjwx6z_f07_kw0000gp/T/stack_638989419
bool(true)
bool(true)
bool(true)
