I have been known to use both.
One advantage is that PHP is relatively light-weight.
PHP also has very tight binding to MySQL which is good,
but it's also bad as it can cause problems
with mod_perl etc.
The thing that I really dislike about PHP is
the variable syntax/concept (e.g. one sigil).
The explosion of functions is also a little annoying.
On the plus side it has PCRE
(Perl Compatible Regular Expressions ;-)
--
perl -pe "s/\b;([st])/'\1/mg"
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