sanitize_user()

sanitize_user() — Sanitizes a username, stripping out unsafe characters. Removes tags, percent-encoded characters, HTML entities, and if strict is enabled, will only keep alphanumeric, _, space, ., -, @. After sanitizing, it passes the username, raw username (the username in the parameter), and the value of $strict as parameters for the ‘sanitize_user’ filter.

Inputs: $username (string): The username to be sanitized. $strict (bool): Optional. If set to true, limits $username to specific characters. Default false.

Returns string: The sanitized username, after passing through filters.