/usr/share/php/xajax/examples/ is in php-xajax 0.5-1ubuntu1.
This file is owned by root:root, with mode 0o755.
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/usr/share/php/xajax/examples/helloworld.php
/usr/share/php/xajax/examples/multiply/
/usr/share/php/xajax/examples/multiply/multiply.common.php
/usr/share/php/xajax/examples/multiply/multiply.php
/usr/share/php/xajax/examples/multiply/multiply.server.php
/usr/share/php/xajax/examples/signup/
/usr/share/php/xajax/examples/signup/signup.common.php
/usr/share/php/xajax/examples/signup/signup.php
/usr/share/php/xajax/examples/signup/signup.server.php
/usr/share/php/xajax/examples/thewall/
/usr/share/php/xajax/examples/thewall/brick.jpg
/usr/share/php/xajax/examples/thewall/thewall.common.php
/usr/share/php/xajax/examples/thewall/thewall.php
/usr/share/php/xajax/examples/thewall/thewall.server.php
/usr/share/php/xajax/examples/xul/
/usr/share/php/xajax/examples/xul/xulApplication.php
/usr/share/php/xajax/examples/xul/xulClient.xul
/usr/share/php/xajax/examples/xul/xulServer.php