--TEST--
readline_callback_handler_install(): Basic test
--SKIPIF--
<?php if (!extension_loaded("readline")) die("skip"); ?>
--FILE--
<?php

function foo() {
	readline_callback_handler_remove();
}

var_dump(readline_callback_handler_install('testing: ', 'foo'));
var_dump(readline_callback_handler_install('testing: ', 'foobar!'));
var_dump(readline_callback_handler_install('testing: '));

?>
--EXPECTF--
testing: bool(true)

Warning: readline_callback_handler_install(): foobar! is not callable in %s on line %d
bool(false)

Warning: readline_callback_handler_install() expects exactly 2 parameters, 1 given in %s on line %d
NULL