It doesn't quite have the same flexibility as perl's anonymous subs but there is an equivalent in PHP

<?php
  $f = create_function('$s', 'echo "got: $s";');
  $f("a string");
?>

__output__

got: a string
[download]

So we have an anonymous function but unfortunately it is isn't totally orthogonal with normal functions in PHP.
HTH

_________
broquaint