Dumpers

HLI comes with a small Plugin API to allow special dump types for special variable values. Currently the follwing plugins exist and are part of the basic HLI releases.

Recursive
Default Plugin for Arrays and Object if no other plugin can be used.
Image
Displays any gd-image-resource using the <img src="data:..."/> syntax. It will always dump images as PNG. Note that IE doesn't understand that syntax.
Serialized
Makes serialized strings a little more readable by highlightning them.
DBConnection and DBQuery
DBConnection can handle mysql/mysqli and PDO. DBQuery can handle mysql/mysqli results, mysqli_stmt, PDOInstance and PDOStatment. Displays the result set as a table.
Directory
Can handle resources/objects returned by opendir() and dir(), and DirectoryIterators. Displayes dump as a table.
XML/DOM
Can handle any DOMNode, DOMNodeList and DOMCharacterData object, SimpleXMLElement objects and strings that look like XML.