PHP 5 SimpleXML Functions

PHP SimpleXML Introduction

SimpleXML is an extension that allows us to easily manipulate and get XML data.

SimpleXML provides an easy way of getting an element's name, attributes and textual content if you know the XML document's structure or layout.

SimpleXML turns an XML document into a data structure you can iterate through like a collection of arrays and objects.

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Installation

As of PHP 5, the SimpleXML functions are part of the PHP core. No installation is required to use these functions.

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PHP 5 SimpleXML Functions

Function	Description
__construct()	Creates a new SimpleXMLElement object
addAttribute()	Adds an attribute to the SimpleXML element
addChild()	Adds a child element the SimpleXML element
asXML()	Returns a well-formed XML string (XML version 1.0) from a SimpleXML object
attributes()	Returns the attributes/values of an element
children()	Returns the children of a specified node
count()	Counts the children of a specified node
getDocNamespaces()	Returns the namespaces DECLARED in document
getName()	Returns the name of the XML tag referenced by the SimpleXML element
getNamespaces()	Returns the namespaces USED in document
registerXPathNamespace()	Creates a namespace context for the next XPath query
saveXML()	Alias of asXML()
simplexml_import_dom()	Returns a SimpleXMLElement object from a DOM node
simplexml_load_file()	Converts an XML file into a SimpleXMLElement object
simplexml_load_string()	Converts an XML string into a SimpleXMLElement object
xpath()	Runs an XPath query on XML data

PHP 5 SimpleXML Iteration Functions

Function	Description
current()	Returns the current element
getChildren()	Returns the child elements of the current element
hasChildren()	Checks whether the current element has children
key()	Return the current key
next()	Moves to the next element
rewind()	Rewind to the first element
valid()	Check whether the current element is valid

Credit: www.w3schools.com