readline_callback_handler_install

Function • Return type changed in PHP 8.5

Initializes the readline callback interface and terminal, prints the prompt and returns immediately.

PHP 5
PHP 7
PHP 8.0
Improved
PHP 8.1-8.2
PHP 8.3
PHP 8.4
PHP 8.5
Improved
PHP 8.6

readline_callback_handler_install Function synopsis

readline_callback_handler_install(string $prompt, callable $callback): true

Parameters

$prompt

Typestring

The prompt message.

$callback

Typecallable

The $callback function takes one parameter; the user input returned.

Return value

Typetrue

Always returns true

Changes to the readline_callback_handler_install Function

PHP 8.5

  • Return type changed: bool to true
- readline_callback_handler_install(string $prompt, callable $callback): bool
+ readline_callback_handler_install(string $prompt, callable $callback): true

PHP 8.0

  • Return type added: bool
  • Parameter type added for parameter #1 ($prompt): string
  • Parameter type added for parameter #2 ($callback): callable
- readline_callback_handler_install($prompt, $callback)
+ readline_callback_handler_install(string $prompt, callable $callback): bool

readline_callback_handler_install Function Availability

PHP VersionAvailability
PHP 8.6Future Release Yes
PHP 8.5Upcoming Release Yes
PHP 8.4Supported (Latest) Yes
PHP 8.3Supported Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Security-Fixes Only Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported Yes
PHP 5.5Unsupported Yes
PHP 5.4Unsupported Yes
PHP 5.3Unsupported Yes