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swoole_async_write	swoole_clear_error

Swoole Functions	Last updated: Mon, 26 Oct 2026

swoole_async_writefile

(PECL swoole >= 1.9.0)

swoole_async_writefile — Write data to a file asynchronously

Description

function swoole_async_writefile(
    string $filename,
    string $content,
    callable $callback = ?,
    int $flags = 0
): bool

Parameters

filename: The filename being written.
content: The content writing to the file.
callback
flags

Return Values

Returns true on success or false on failure.

swoole_async_write	swoole_clear_error

Swoole Functions	Last updated: Mon, 26 Oct 2026