(PHP 5 >= 5.1.2, PHP 7, PECL xmlwriter >= 0.1.0) Write full DTD tag

(PHP 4, PHP 5, PHP 7) Set options in an XML parser

(PHP 5 >= 5.2.0, PHP 7) Runs XPath query on XML data

(PHP 5 >= 5.0.4, PHP 7) Determine if PHP has EXSLT support

(PHP 5 >= 5.1.2, PHP 7, PECL xmlwriter >= 0.1.0) Create start attribute

(PHP 5 >= 5.1.2, PHP 7, PECL xmlwriter >= 0.1.0) Create new xmlwriter using memory for string output

(PHP 4, PHP 5, PHP 7) Unserializes a WDDX packet

(^) Get the default value for the property

(PHP 5 >= 5.1.2, PHP 7, PECL xmlwriter >= 0.1.0) Write full comment tag

(^) Get the property which defines the containment relationship to the data object