PHP 3, PHP 4, PHP 5.
ftps:// since PHP 4.3.0
Allows read access to existing files and creation of new files via FTP. If the server does not support passive mode ftp, the connection will fail.
You can open files for either reading or writing, but not both
simultaneously. If the remote file already exists on the ftp
server and you attempt to open it for writing but have not specified
the context option
overwrite, the connection
will fail. If you need to overwrite existing files over ftp,
overwrite option in the context
and open the file for writing. Alternatively, you can
use the FTP extension.
As of PHP 5.0.0 files may be appended via the
ftp:// URL wrapper. In prior versions, attempting
to append to a file via
ftp:// will result in failure.
ftps:// was introduced in PHP 4.3.0.
It is the same as
but attempts to negotiate a secure connection with the ftp server.
If the server does not support SSL, then the connection falls back
to regular unencrypted ftp.
FTPS is supported starting from PHP 4.3.0, if you have compiled in support for OpenSSL.
|Attribute||PHP 4||PHP 5|
|Restricted by allow_url_fopen||Yes||Yes|
|Allows Writing||Yes (new files only)||Yes (new files/existing files with overwrite)|
|Allows Simultaneous Reading and Writing||No||No|
|Supports stat()||No||As of PHP 5.0.0: filesize(), filetype(), file_exists(), is_file(), and is_dir() elements only. As of PHP 5.1.0: filemtime().|
|Allow overwriting of already existing files on remote server. Applies to write mode (uploading) only.|
|File offset at which to begin transfer. Applies to read mode (downloading) only.||0 (Beginning of File)|
Proxy FTP request via http proxy server.
Applies to file read operations only.
Additional context options may be supported by the
ftp:// streams, refer to context
options for the
tcp:// transport. For
ftps:// streams, refer to context options