How to upload pdf files by php
This article mainly introduces "how php uploads pdf files". In daily operation, I believe many people have doubts about how php uploads pdf files. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for you to answer the doubts about "how php uploads pdf files". Next, please follow the editor to study!
1. The enctype attribute of the tag specifies which content type to use when submitting the form. When the form requires binary data, such as the contents of the file, use "
Multipart/form-data ".
two。 The type "file" attribute of the tag specifies that the input should be treated as a file. For example, when you preview in a browser, you will see a
A browse button.
Note: allowing users to upload files is a huge security risk. Please only allow trusted users to perform file upload operations.
Create a script for uploading and uploading
The "upload_file.php" file contains the code to upload the file:
< php if （$_FILES["file"]["error"] >0)
{
Echo error:. $_ FILES ["file"] ["error"]. "
"
}
Else
{
Echo upload file name:. $_ FILES ["file"] ["name"]. "
"
Echo Files of Type:. $_ FILES ["file"] ["type"]. "
"
Echo File size:. ($_ FILES ["file"] ["size"] / 1024). "kB
"
Echo "location for temporary storage of files:". $_ FILES ["file"] ["tmp_name"]
}
>
By using PHP's global array $_ FILES, you can upload files from the client computer to the remote server.
The first parameter is the input name of the form, and the second subscript can be "name", "type", "size", "tmp_name", or "error". As follows:
$_ FILES ["file"] ["ame"]-name of the uploaded file
$_ FILES ["file"] ["type"]-the type of file uploaded
$_ FILES ["file"] ["size"]-size of the uploaded file in bytes
$_ FILES ["file"] ["tmp_ ame"]-name of the temporary copy of the file stored on the server
$_ FILES ["file"] ["error"]-error code caused by file upload
This is a very simple way to upload files. For security reasons, you should increase restrictions on which users are allowed to upload files.
At this point, the study on "how php uploads pdf files" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!
