CascadiaPHP 2024


(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

ftp_set_optionSet miscellaneous runtime FTP options


ftp_set_option(FTP\Connection $ftp, int $option, int|bool $value): bool

This function controls various runtime options for the specified FTP connection.



An FTP\Connection instance.


Currently, the following options are supported:

Supported runtime FTP options
FTP_TIMEOUT_SEC Changes the timeout in seconds used for all network related functions. value must be an integer that is greater than 0. The default timeout is 90 seconds.
FTP_AUTOSEEK When enabled, GET or PUT requests with a resumepos or startpos parameter will first seek to the requested position within the file. This is enabled by default.
FTP_USEPASVADDRESS When disabled, PHP will ignore the IP address returned by the FTP server in response to the PASV command and instead use the IP address that was supplied in the ftp_connect(). value must be a boolean.


This parameter depends on which option is chosen to be altered.

Return Values

Returns true if the option could be set; false if not. A warning message will be thrown if the option is not supported or the passed value doesn't match the expected value for the given option.


Version Description
8.1.0 The ftp parameter expects an FTP\Connection instance now; previously, a resource was expected.


Example #1 ftp_set_option() example

// Set the network timeout to 10 seconds
ftp_set_option($ftp, FTP_TIMEOUT_SEC, 10);

See Also

  • ftp_get_option() - Retrieves various runtime behaviours of the current FTP connection

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