Can not use command line interpreter

Install this:

php5-readline

then try use:

php -a

php windows command-line-interface

type php -m and make sure you have the readline module. If you don't you won't be able to use it.

As of PHP 5.1.0, the CLI SAPI provides an interactive shell using the -a option if PHP is compiled with the --with-readline option.

php windows command-line-interface

There seems to be a compilation / linkage error between your PHP and libreadline. This is documented in PHP Bug #48759.

Did you compile PHP by yourself? Did you play around with --configure and didn't do a proper make clean before your final build?
Does php -m list readline as enabled feature? (Is PHP built with option --with-readline)
What is you php version?
What distribution do you use?
Do you have the libreadline (the *-dev package) installed?

CodeHunter