Regex: text between first occurrence of two patterns

Question

/url?q=http://it.wikipedia.org/wiki/Spider-Man_(film)&sa=U&ei=iavVUKuFGsrNswbz74GQBA&ved=0CBYQFjAA&usg=AFQjCNEth5YspFPWp6CInyAfknlEvVgIfA

Answer 1

Try:

\?q=([^&]+)

and capture the first group.