String value to set to parameter at key. Format of value varies
with the parameter.
Return Values
No value is returned.
Notes
Warning
This function is
EXPERIMENTAL. The behaviour of this function, its name, and
surrounding documentation may change without notice in a future release of PHP.
This function should be used at your own risk.
Examples
Example #1 Default authentication example
This example configures SVN so that the default username to use
is 'Bob' and the default password is 'abc123':