Set of common php xml functions (more detailed)

1. DOM Functions

A. DOMDocument-> load ()
Purpose: load xml files.
Usage: DOMDocument-> load (string filename)
Parameter: filename, xml file;
Return: if the operation succeeds, TRUE is returned. If the operation fails, FALSE is returned.

B. DOMDocument-> loadXML ()
Purpose: load xml Code
Usage: DOMDocument-> loadXML (string source)
Parameter: source xml code;
Return: if the operation succeeds, TRUE is returned. If the operation fails, FALSE is returned.

C. DOMDocument-> getElementsByTagName_r ()
Purpose: search by Tag Name
Usage: DOMDocument-> getElementsByTagName_r (string name)
Parameter: name, label name;
Return Value: The New DOMNodeList object.

D. DOMDocument-> getElementById ()
Purpose: search by Tag Name
Usage: DOMDocument-> getElementById (string elementId)
Parameter: elementId, tag id;
Return Value: The New DOMNodeList object.

E. DOMDocument-> createElement_x_x ()
Purpose: Create a tag.
Usage: DOMDocument-> createElement_x_x (string name [, string value])
Parameter: name, label name, value, only;
Return Value: A New DOMElement object. The failure value is false.

F. DOMDocument-> createTextNode ()
Purpose: create a text node.
Usage: DOMDocument-> createTextNode (string content)
Parameter: content, content;
Return Value: A New DOMText object. The failure value is false.

H. DOMDocument-> createCDATASection ()
Purpose: Create a cdata Node
Usage: DOMDocument-> createCDATASection (string data)
Parameter: data, content;
Return Value: A New DOMCDATASection object. The failure value is false.

I. DOMDocument-> createAttribute ()
Purpose: Create tag attributes.
Usage: DOMDocument-> createAttribute (string name)
Parameter: name, attribute name;
Return Value: A New DOMAttr object. The failure value is false.

J. DOMDocument-> validate ()
Purpose: test the xml code.
Usage: DOMDocument-> validate ()
Parameter: None
Return: if the operation succeeds, TRUE is returned. If the operation fails, FALSE is returned.

K. DOMDocument-> save ()
Purpose: Save the xml code to the xml file.
Usage: DOMDocument-> save (string filename)
Parameter: filename, xml file;
Return: the xml character length is returned successfully. If the string fails, false is returned.

L. DOMDocument-> saveXML ()
Purpose: Save the xml code.
Usage: DOMDocument-> saveXML ([DOMNode node [, int options])
Parameter: node, DOMNode;
Return: xml is returned for success, and false is returned for failure.

M, DOMElement-> hasAttribute ()
Purpose: Check whether a property exists.
Usage: DOMElement-> hasAttribute (string name)
Parameter: name, attribute name;
Return: if the operation succeeds, TRUE is returned. If the operation fails, FALSE is returned.

N, DOMElement-> getAttribute ()
Purpose: Get the property value.
Usage: DOMElement-> getAttribute (string name)
Parameter: name, attribute name;
Return: the property value is returned successfully. If the property value is returned, null is returned.

O, DOMElement-> getAttribute ()
Purpose: Get the property value.
Usage: DOMElement-> getAttribute (string name)
Parameter: name, attribute name;
Return: the property value is returned successfully. If the property value is returned, null is returned.

P, DOMElement-> setAttribute ()
Purpose: set the attribute value.
Usage: DOMElement-> setAttribute (string name, string value)
Parameter: name, attribute name; value, attribute value
Return: if the operation succeeds, TRUE is returned. If the operation fails, FALSE is returned.

Q, DOMNode-> appendChild ()
Purpose: link the child node to the parent node.
Usage: DOMNode-> appendChild (DOMNode newnode)
Parameter: newnode, new node;
Return: the node is returned successfully. If the node fails, null is returned.

R, DOMNode-> hasAttributes ()
Purpose: Check whether attributes exist.
Usage: DOMNode-> hasAttributes ()
Parameter: None
Return: if the operation succeeds, TRUE is returned. If the operation fails, FALSE is returned.

S, DOMNode-> hasChildNodes ()
Purpose: Check whether subnodes exist.
Usage: DOMNode-> hasChildNodes ()
Parameter: None
Return: if the operation succeeds, TRUE is returned. If the operation fails, FALSE is returned.

T, DOMNode-> insertBefore ()
Purpose: insert the child node into the dom tree, which is located before a node.
Usage: DOMNode-> insertBefore (DOMNode newnode [, DOMNode refnode])
Parameter: newnode, new node; refnode, refer to node
Return: A new node is returned successfully. If the node fails, a blank value is returned.

U, DOMNode-> removeChild ()
Purpose: delete a subnode.
Usage: DOMNode-> removeChild (DOMNode oldnode)
Parameter: oldnode, subnode;
Return: The child node is returned successfully. If the child node fails, null is returned.

V, DOMNode-> replaceChild ()
Purpose: update a subnode.
Usage: DOMNode-> replaceChild (DOMNode newnode, DOMNode oldnode)
Parameter: newnode, new node, oldnode, old node
Return: The oldnode is returned successfully. If the node fails, null is returned.

--------- DOMNode attribute -------------

A. DOMNode-> nodeType
Purpose: Obtain the node type.

B. DOMNode-> nodeName
Purpose: Get the node name

C. DOMNode-> nodeValue
Purpose: Get node content

D. DOMNode-> textContent
Purpose: Get node content

E. DOMNode-> parentNode
Purpose: Obtain the parent node of a node.

F. DOMNode-> childNodes
Purpose: Obtain node subnodes.

G, DOMNode-> firstChild
Purpose: obtain the first subnode of a node.

H. DOMNode-> lastChild
Purpose: Obtain the last subnode of a node.

2. XMLReader

A. XMLReader: XML
Purpose: load an xml string.
Usage: XMLReader: xml (string source [, string encoding [, int options])
Parameter: source, xml string; encoding, document encoding or NULL
Return: if the operation succeeds, TRUE is returned. If the operation fails, FALSE is returned.

B. XMLReader: open
Purpose: load an xml file.
Usage: XMLReader: open (string url [, string encoding [, int options])
Parameter: url, link to xml; encoding, document encoding or NULL
Return: if the operation succeeds, TRUE is returned. If the operation fails, FALSE is returned.

C. XMLReader: read
Purpose: Read xml to forward the parser to the next tag.
Usage: XMLReader: read (), traversing the entire document in the while LOOP
Parameter: NULL
Return: if the operation succeeds, TRUE is returned. If the operation fails, FALSE is returned.

D. XMLReader: getAttribute
Purpose: Get attributes
Usage: XMLReader: getAttribute (string name)
Parameter: name, attribute name
Return: if the operation succeeds, the property value is returned. If the operation fails, FALSE is returned.

E. XMLReader: isValid
Purpose: Check whether xml is legal
Usage: XMLReader: isValid ()
Parameter: None
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

F. XMLReader: moveToAttribute
Purpose: Move the focus to the attribute.
Usage: XMLReader: moveToAttribute (string name)
Parameter: name, attribute name
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

G, XMLReader: moveToFirstAttribute
Purpose: Move the focus to the first attribute.
Usage: XMLReader: moveToFirstAttribute ()
Parameter: None
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

H. XMLReader: moveToNextAttribute
Purpose: Move the focus to the next attribute.
Usage: XMLReader: moveToNextAttribute ()
Parameter: None
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

I. XMLReader: moveToElement
Purpose: Move the focus to the current attribute of the parent node.
Usage: XMLReader: moveToElement ()
Parameter: None
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

J. XMLReader: close
Purpose: Disable xml input.
Usage: XMLReader: close ()
Parameter: None
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

-------- Constant ---------

XMLReader: NONE = 0;
XMLReader: ELEMENT = 1;
XMLReader: ATTRIBUTE = 2;
XMLReader: TEXT = 3;
XMLReader: CDATA = 4;
XMLReader: ENTITY_REF = 5;
XMLReader: ENTITY = 6;
XMLReader: PI = 7;
XMLReader: COMMENT = 8;
XMLReader: DOC = 9;
XMLReader: DOC_TYPE = 10;
XMLReader: DOC_FRAGMENT = 11;
XMLReader: NOTATION = 12;
XMLReader: WHITESPACE = 13;
XMLReader: SIGNIFICANT_WHITESPACE = 14;
XMLReader: END_ELEMENT = 15;
XMLReader: END_ENTITY = 16;
XMLReader: XML_DECLARATION = 17;
XMLReader: LOADDTD = 1;
XMLReader: DEFAULTATTRS = 2;
XMLReader: VALIDATE = 3;
XMLReader: SUBST_ENTITIES = 4;

-------- Properties -----------

A. XMLReader-> attributeCount;
Role: number of attributes

B. XMLReader-> baseURI;
Role: node url

C. XMLReader-> depth;
Role: number of layers of the node tree

D. XMLReader-> hasAttributes;
Purpose: Check whether any attribute exists.

E. XMLReader-> hasValue;
Role: whether there is a value

F. XMLReader-> isEmptyElement;
Purpose: whether the tag is empty.

G, XMLReader-> localName;
Role: label description

H. XMLReader-> name;
Role: Tag Name

I. XMLReader-> nodeType;
Role: Node Type

J. XMLReader-> value;
Purpose: content of the node text

3. XMLWriter

A. XMLWriter: openURI
Purpose: Create an XMLWriter from the url output code.
Usage: XMLWriter: openURI (string uri)
Parameter: url xml address
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

B. XMLWriter: setIndentString
Purpose: Set indentation characters.
Usage: XMLWriter: setIndentString (string indentString)
Parameter: indentString indent character
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

C. XMLWriter: setIndent
Purpose: set the indent switch.
Usage: XMLWriter: setIndent (bool indent)
Parameter: indent or not
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

D. XMLWriter: startDocument
Purpose: set the document start tag.
Usage: XMLWriter: startDocument ([string version [, string encoding [, string standalone])
Parameter: version, version, encoding, encoding, standalone, independent
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

E. XMLWriter: endDocument
Purpose: set the document end tag.
Usage: XMLWriter: endDocument ()
Parameter: None
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

F. XMLWriter: startDTD
Purpose: set the dtd start tag.
Usage: XMLWriter: startDTD (string qualifiedName [, string publicId [, string systemId])
Parameter: qualifiedName, name; publicId, piublic; systemId, system
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

G, XMLWriter: endDTD
Purpose: set the dtd end tag.
Usage: XMLWriter: endDTD ()
Parameter: None
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

H. XMLWriter: startElement
Purpose: set the start tag.
Usage: XMLWriter: startElement (string name)
Parameter: name, label name
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

I. XMLWriter: endElement
Purpose: set the end tag.
Usage: XMLWriter: endElement ()
Parameter: None
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

J. XMLWriter: startCData
Purpose: set the start tag.
Usage: XMLWriter: startCData ()
Parameter: None
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

K. XMLWriter: endCData
Purpose: set the end tag.
Usage: XMLWriter: endCData ()
Parameter: None
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

L. XMLWriter: writeAttribute
Purpose: Write tag attributes.
Usage: XMLWriter: writeAttribute (string name, string value)
Parameter: name, attribute name; value, attribute value
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

M, XMLWriter: writeElement
Purpose: Write tag attributes.
Usage: XMLWriter: writeElement (resource xmlwriter, string name, string content)
Parameter: xmlwriter, xml resource; name, Tag name; value, text value
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

N, XMLWriter: writeCData
Purpose: Write tag attributes.
Usage: XMLWriter: writeCData (resource xmlwriter, string content)
Parameter: xmlwriter, xml resource; value, text value
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

O, XMLWriter: text
Purpose: write text
Usage: XMLWriter: text (string content)
Parameter: content, text value
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.

P, XMLWriter: flush
Purpose: Clear Cache
Usage: XMLWriter: flush ()
Parameter: None
Return: if the operation succeeds, true is returned. If the operation fails, FALSE is returned.