Php is used as a server to accept files uploaded by the client. how does the server receive files?

Php acts as a server and accepts files uploaded by the client. how does the server receive files written locally by C ++, then I want to use PHP to write a program on the server to store the file. Do I need to write a listener on the server? how can I link them for data transmission?

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Add the multipart/form-data header in post mode
Php automatically identifies uploaded files

If you use the put method, you need to read the file content from the php: // input resource on the balanced object.

Add the multipart/form-data header in post mode
Php automatically identifies uploaded files

If you use the put method, you need to read the file content from the php: // input resource on the balanced item side. can you write a few lines of specific code? PHP is also a beginner at the beginning. thank you.

If (isset ($ _ FILES ['variable name specified during Upload '] ['tmp _ name ')) {move_uploaded_file ($ _ FILES ['variable name specified during Upload '] ['tmp _ name'], 'destination filename ');} else {$ s = file_get_contents ('php: // input'); if ($ s) {file_put_contents ('Destination filename ', $ s );}}

Add the multipart/form-data header in post mode
Php automatically identifies uploaded files

If you use the put method, you need to read the file content from the php: // input resource on the balanced object. I have a program here.

If ($ _ SERVER ["REQUEST_METHOD"] = "POST ")
{
// Upload the maximum file size.
$ MAX_SIZE = 20000000;
Echo $ MAX_SIZE;
// Set the allowed Mime type.
$ FILE_MIMES = array ('image/jpeg ', 'image/jpg', 'image/GIF'
, 'Image/png ', 'application/msword', 'text/plain', 'application/octet-stream', 'application/x-zip-compressed ');

// Set the allowed file types. Please add according to the format.
$ FILE_EXTS = comment ', 'Zip ');


/*************************************** *********************
* Set variables
**************************************** ********************/
$ Site_name = $ _ SERVER ['http _ host'];
$ Url_dir = "http: //". $ _ SERVER ['http _ host']. dirname ($ _ SERVER ['php _ SELF ']);
$ Url_this = "http: //". $ _ SERVER ['http _ host']. $ _ SERVER ['php _ SELF '];

$ Upload_dir = "files /";
$ Upload_url = $ url_dir. "/files /";
$ Message = "";

/*************************************** *********************
* Create an upload Directory
**************************************** ********************/
If (! Is_dir ("files ")){
If (! Mkdir ($ upload_dir ))
Die ("upload_files directory doesn't exist and creation failed ");
If (! Chmod ($ upload_dir, 0755 ))
Die ("change permission to 755 failed .");
Echo $ upload_dir;
}

/*************************************** *********************
* The User request process. all the following upfiles must be the same as those of the VC client. they can be replaced in batches. See row 224th of HotpimUploadDlg. cpp.
**************************************** ********************/


If ($ _ FILES ['upfile'])
{
$ Resource = fopen ("log.txt", "");
Fwrite ($ resource, date ("Ymd h: I: s"). "UPLOAD-$ _ SERVER [REMOTE_ADDR]"
. $ _ FILES ['upfile'] ['name']. ""
. $ _ FILES ['upfile'] ['type']. "\ n ");
Fclose ($ resource );

$ File_type = $ _ FILES ['upfile'] ['type'];
$ File_name = $ _ FILES ['upfile'] ['name'];
$ File_ext = substr ($ file_name, strrpos ($ file_name ,"."));

// Check the file size
If ($ _ FILES ['upfile'] ['size']> $ MAX_SIZE)
$ Message = "The file size is over 2 MB .";
// File type/extension check
Else if (! In_array ($ file_type, $ FILE_MIMES )&&! In_array ($ file_ext, $ FILE_EXTS ))
$ Message = "Sorry, $ file_name ($ file_type) is not allowed to be uploaded .";
Else
$ Message = do_upload ($ upload_dir, $ upload_url );
}

Else if (! $ _ FILES ['upfile']);
Else
$ Message = "Invalid File Specified .";

}
Function do_upload ($ upload_dir, $ upload_url)
{
$ Temp_name = $ _ FILES ['upfile'] ['tmp _ name'];
$ File_name = $ _ FILES ['upfile'] ['name'];
$ File_name = str_replace ("\", "", $ file_name );
$ File_name = str_replace ("'", "", $ file_name );
$ File_path = $ upload_dir. $ file_name;

// Check the file name
If ($ file_name = ""){
$ Message = "Invalid File Name Specified ";
Return $ message;
}

$ Result = move_uploaded_file ($ temp_name, $ file_path );
If (! Chmod ($ file_path, 0755 ))
$ Message = "change permission to 755 failed .";
Else
$ Message = ($ result )? "$ File_name uploaded successfully .":
"Somthing is wrong with uploading a file .";
Return $ message;
}
?>

This is a standard file upload program. it is recommended that you check the php Manual to understand it.

We recommend that you check the manual $ _ FILES with examples.

Thank you. I will continue to read the PHP Manual.