The HttpQueryString class
PHP Manual

HttpQueryString::mod

(PECL pecl_http >= 1.1.0)

HttpQueryString::mod — Modifiy query string copy

Description

public HttpQueryString HttpQueryString::mod ( mixed $params )

Copies the query string object and sets provided params at the clone.

Parameters

params

query string params to add

Return Values

Returns a new HttpQueryString object

The HttpQueryString class
PHP Manual