php PHP从上传的文本文件中读取？
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PHP read from uploaded text file?
提问by Dan
If I upload a text file via a form, is it possible to output its contents directly from the $_FILES variable rather than saving it onto the server first? I know this is a security risk, but it will only be run on a local machine.
如果我通过表单上传文本文件，是否可以直接从 $_FILES 变量输出其内容，而不是先将其保存到服务器上？我知道这是一个安全风险，但它只能在本地机器上运行。
Any advice appreciated.
任何建议表示赞赏。
Thanks.
谢谢。
回答by MANCHUCK
Doing
正在做
file_get_contents($_FILES['uploadedfile']['tmp_name']);
is valid however you should also check to make sure that the file was uploaded through a form and that no errors occurred during upload:
是有效的，但是您还应该检查以确保文件是通过表单上传的，并且在上传过程中没有发生错误：
if ($_FILES['uploadedfile']['error'] == UPLOAD_ERR_OK //checks for errors
&& is_uploaded_file($_FILES['uploadedfile']['tmp_name'])) { //checks that file is uploaded
echo file_get_contents($_FILES['uploadedfile']['tmp_name']);
}
A helpful link is http://us2.php.net/manual/en/features.file-upload.php
一个有用的链接是http://us2.php.net/manual/en/features.file-upload.php
回答by Marek Karbarz
The file is saved to temp directory the moment it's uploaded, but you can use $_FILES['uploadedfile']['tmp_name']to read it without having to save in a permanent place.
该文件在上传时保存到临时目录，但您可以使用$_FILES['uploadedfile']['tmp_name']它来读取它而无需保存在永久位置。
回答by Teekin
Unfortunately, no. At least not through the $_FILES variable. Sorry.
抱歉不行。至少不是通过 $_FILES 变量。对不起。
EDIT: It is always saved as the temp file in $_FILES and you'll always have to use that one for content.
编辑：它始终保存为 $_FILES 中的临时文件，您将始终必须使用该文件作为内容。
