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readline_on_new_line	readline_redisplay

Readline Functions	Last updated: Mon, 26 Oct 2026

readline_read_history

(PHP 4, PHP 5, PHP 7, PHP 8)

readline_read_history — Reads the history

Description

function readline_read_history(?string $filename = null): bool

This function reads a command history from a file.

Parameters

filename: Path to the filename containing the command history.

Return Values

Returns true on success or false on failure.

Changelog

Version	Description
8.0.0	`filename` is nullable now.

readline_on_new_line	readline_redisplay

Readline Functions	Last updated: Mon, 26 Oct 2026