The behaviour of these functions is affected by settings in php.ini.
| Name | Default | Changeable | Changelog | 
|---|---|---|---|
| cli.pager | "" | PHP_INI_ALL | Available since PHP 5.4.0. | 
| cli.prompt | "\\b \\> " | PHP_INI_ALL | Available since PHP 5.4.0. | 
Here's a short explanation of the configuration directives.
cli.pager
      string
     External tool to display output from command line.
cli.prompt
      string
     Command line prompt.