PHP Manual: Get (part of) query string

Description

public mixed HttpQueryString::get ([ string $key [, mixed $type = 0 [, mixed $defval = NULL [, bool $delete = false ]]]] )

Get (part of) the query string.

The type parameter is either one of the HttpQueryString::TYPE_* constants or a type abbreviation like "b" for bool, "i" for int, "f" for float, "s" for string, "a" for array and "o" for a stdClass object.

Parameters

key: key of the query string param to retrieve
type: which variable type to enforce
defval: default value if key does not exist
delete: whether to remove the key/value pair from the query string

Return Values

Returns the value of the query string param or the whole query string if no key was specified on success or defval if key does not exist.