The behaviour of these functions is affected by
settings in php.ini.
In order to configure expect extension, there are
configuration options in the configuration file php.ini.
For further details and definitions of the PHP_INI_* modes, see the
configuration setting may be set.
Here’s a short explanation of the configuration
The timeout period for waiting for the data, when
using the expect_expectl() function.
A value of “-1” disables a timeout from
A value of “0” causes the expect_expectl() function to return
Whether expect should send any output from the
spawned process to stdout. Since interactive programs typically
echo their input, this usually suffices to show both sides of the
Name of the file, where the output from the spawned
process will be written. If this file doesn’t exist, it will be
If this configuration is not empty, the output is
written regardless of the value of expect.loguser.
Changes default size (2000 bytes) of the buffer
used to match asterisks in patterns.