The article explains PHP's readline_completion_function, showing how to register a custom completion callback that mimics Bash tab‑completion, details the required callable parameter, describes the return values (TRUE on success, FALSE on failure), and provides usage notes for developers.
The PHP function readline_clear_history() removes the entire command line history, returning TRUE on success and FALSE on failure, providing a simple way to clear stored input lines during interactive sessions and can be used in scripts that require privacy of entered commands.
The article explains PHP’s readline_callback_read_char function, which reads a single character from user input, triggers the callback installed via readline_callback_handler_install when a full line is received, and returns no value.
readline_callback_handler_remove() is a PHP function that removes the previously installed readline callback handler, restores the terminal settings, and returns true if a handler was successfully removed or false otherwise, providing a way to clean up interactive input sessions.
This guide explains the PHP function readline_callback_handler_install, which sets up a readline callback interface, displays a prompt, returns immediately, and details its parameters, automatic overriding behavior, and boolean return values for success or failure.
This article explains the PHP function readline_add_history, showing how it adds a specified line to the command line history, detailing its syntax, required parameter, and the boolean return values indicating success or failure.
This guide explains the PHP function readline_write_history, showing how it writes command-line history to a file, detailing the required filename parameter and the boolean return values indicating success or failure, enabling developers to persist interactive shell sessions programmatically.
readline_redisplay() is a PHP function that forces the readline interface to redraw the display area, takes no arguments, provides no return value, and is part of the readline extension used to refresh the user’s input line after external changes.
The PHP function readline_read_history() reads command history from a specified file, returning TRUE on success and FALSE on failure, and is used to load previously entered commands into the readline interface.
The article explains the PHP function readline_list_history(), which returns the complete command‑line history as an indexed array, describes its return value, and provides a practical example showing how to print the history using print_r.
The PHP readline_info function retrieves or sets internal readline variables, returning all settings as an array when called without arguments or the previous value when a variable name (and optional new value) is provided, with usage illustrated by a complete code example.
This article explains the PHP readline() function, its purpose for reading a line of user input, the optional prompt parameter, return value details, and provides a complete example demonstrating reading commands, adding them to history, and displaying history and variable information.
This guide explains how to enable and use vi‑style editing in the Bash shell, compares it with the default Emacs mode, and shows practical shortcuts and configuration tips to make command‑line work faster and more comfortable.
