Regular expressions and/or how to describe?

Question

PHP

there are 2 lines
-1.2964505 (always present)
and
?pagereq=1 (not always present)
how to describe a regular expression for such a case
that -1.2964505 could be both separately and together with ?pagereq=1
Example -1.2964505?pagereq=1
my version is like this, but it doesn't quite work
\-(1\.[0-9]{7})?(\?pagereq.*)

Answer 1

/^\-1\.2964505(\?pagereq=(\d+))?$/Ui
ideone.com/vlDAVn

Answer 2

Solution found.