ftp_alloc
(PHP 5)
ftp_alloc -- Allocates space for a file to be uploaded
说明
bool
ftp_alloc ( resource ftp_stream, int filesize [, string &result] )
Sends an ALLO command to the remote FTP server to
allocate space for a file to be uploaded.
注:
Many FTP servers do not support this command. These servers may return a failure
code (FALSE) indicating the command is not supported or a success code (TRUE)
to indicate that pre-allocation is not necessary and the client should continue
as though the operation were successful. Because of this, it may be best to reserve
this function for servers which explicitly require preallocation.
参数
- ftp_stream
The link identifier of the FTP connection.
- filezise
The number of bytes to allocate.
- return
A textual representation of the servers response will be returned by
reference in result if a variable is provided.
返回值
如果成功则返回 TRUE，失败则返回 FALSE。
例
例子 1. ftp_alloc() example
<?php
$file = "/home/user/myfile";
/* connect to the server */
$conn_id = ftp_connect('ftp.example.com');
$login_result = ftp_login($conn_id, 'anonymous', 'user@example.com');
if (ftp_alloc($conn_id, filesize($file), $result)) {
echo "Space successfully allocated on server. Sending $file.\n";
ftp_put($conn_id, '/incomming/myfile', $file, FTP_BINARY);
} else {
echo "Unable to allocate space on server. Server said: $result\n";
}
ftp_close($conn_id);
?>
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