This third edition is 58 pages longer than the second edition,
and now reaches 542 pages in length. The main changes from the
second edition are a new, 48-page chapter on PHP, and a
rewritten/expanded Java chapter taking into account the many
java.util.regex changes between Java 1.4 and Java 1.5/Java 1.6.
I’ve read the first two editions cover-to-cover.