(PHP 4, PHP 5, PHP 7, PHP 8)
readline_read_history — Reads the history
$filename = null): boolThis function reads a command history from a file.
filenamePath to the filename containing the command history.
   Returns true on success or false on failure.
  
| Version | Description | 
|---|---|
| 8.0.0 | filenameis nullable now. |