Please open the link to see the problem. One "entry" is dev-php and the other dev-php4. If there is a difference between those please alter the description accordingly. Thanks Reproducible: Always Steps to Reproduce:
This is not a bug. dev-php/xdebug is for the old dev-php/{mod_}php, dev-php4/xdebug is for the new dev-lang/php ebuilds. http://svn.gnqs.org/projects/gentoo-php-overlay/file/docs/php-upgrading.html?format=raw
Sorry then... Nontheless I would not know from the description which package to emerge!