PHP xml commonly used functions_PHP tutorial

1. DOM function

a. DOMDocument->load()

Function: Load xml file

Usage: DOMDocument->load( string filename )

Parameters: filename, xml file;

Return: TRUE if successful, FALSE if failed.

b. DOMDocument->loadXML()

Function: Load xml code

Usage: DOMDocument->loadXML( string source )

Parameters: source xml code;

Return: TRUE if successful, FALSE if failed.

c. DOMDocument->getElementsByTagName_r()

Function: Search

by tag name

Usage: DOMDocument->getElementsByTagName_r(string name)

Parameters: name, label name;

Return: new DOMNodeList object.

d. DOMDocument->getElementById()

Function: Search

by tag name

Usage: DOMDocument->getElementById(string elementId)

Parameters: elementId, tag id;

Return: new DOMNodeList object.

e.DOMDocument->createElement_x_x()

Function: Create tags

Usage: DOMDocument->createElement_x_x(string name [, string value] )

Parameters: name, tag name, value, only;

Return: new DOMElement object, false on failure.

　f. DOMDocument->createTextNode()

Function: Create text node

Usage: DOMDocument->createTextNode(string content)

Parameters: content, content;

Return: new DOMText object, false on failure.

h. DOMDocument->createCDATASection()

Function: Create cdata node

Usage: DOMDocument->createCDATASection( string data)

Parameters: data, content;

Return: new DOMCDATASection object, false on failure.

i. DOMDocument->createAttribute()

Function: Create label attributes

Usage: DOMDocument->createAttribute(string name)

Parameters: name, attribute name;

Return: new DOMAttr object, false on failure.

j.DOMDocument->validate()

Function: Check xml code

Usage: DOMDocument->validate()

Parameters: None

Return: TRUE if successful, FALSE if failed.

k、DOMDocument->save()

Function: Save xml code to xml file

Usage: DOMDocument->save(string filename)

Parameters: filename, xml file;

Return: Returns the xml character length if successful, false if failed.

l. DOMDocument->saveXML()

Function: Save xml code

Usage: DOMDocument->saveXML([DOMNode node [, int options]])

Parameters: node, DOMNode;

Return: Return xml if successful, false if failed.

m、DOMElement->hasAttribute()

Function: Detect whether the attribute exists

Usage: DOMElement->hasAttribute(string name)

Parameters: name, attribute name;

Return: TRUE if successful, FALSE if failed.

n. DOMElement->getAttribute()

Function: Get attribute value

Usage: DOMElement->getAttribute(string name)

Parameters: name, attribute name;

Return: The attribute value is returned on success, and empty on failure.

o.DOMElement->getAttribute()

Function: Get attribute value

Usage: DOMElement->getAttribute(string name)

Parameters: name, attribute name;

Return: The attribute value is returned on success, and empty on failure.

p、DOMElement->setAttribute()

Function: Set attribute value

Usage: DOMElement->setAttribute(string name, string value)

Parameters: name, attribute name; value, attribute value

Return: TRUE if successful, FALSE if failed.

q、DOMNode->appendChild()

Function: Link child nodes to parent nodes

Usage: DOMNode->appendChild(DOMNode newnode)

Parameters: newnode, new node;

Return: Return a new node if successful, return empty if failed.

r、DOMNode->hasAttributes()

Function: Check whether there are attributes

Usage: DOMNode->hasAttributes( )

Parameters: None

Return: TRUE if successful, FALSE if failed.

　s, DOMNode->hasChildNodes()

Function: Check whether there are child nodes

Usage: DOMNode->hasChildNodes()

Parameters: None

Return: TRUE if successful, FALSE if failed.

　t、DOMNode->insertBefore()

Function: Insert the child node into the DOM tree in front of a certain node

Usage: DOMNode->insertBefore(DOMNode newnode [, DOMNode refnode] )

Parameters: newnode, new node; refnode, reference node

Return: Returns a new node if successful, returns empty if failed.

u. DOMNode->removeChild()

Function: Delete child nodes

Usage: DOMNode->removeChild(DOMNode oldnode)

Parameters: oldnode, child node;

Return: Returns child nodes on success, returns empty on failure.

v. DOMNode->replaceChild()

Function: Update child nodes

Usage: DOMNode->replaceChild(DOMNode newnode, DOMNode oldnode)

Parameters: newnode, new node; oldnode, old node

Return: Return oldnode on success, empty on failure.

　————————-DOMNode attribute————————————–

a. DOMNode->nodeType

Function: Get node type

b. DOMNode->nodeName

Function: Get node name

c. DOMNode->nodeValue

Function: Get node content

d. DOMNode->textContent

Function: Get node content

e. DOMNode->parentNode

Function: Get the parent node of the node

f. DOMNode->childNodes

Function: Get node child nodes

g、DOMNode->firstChild

Function: Get the first child node of the node

h、DOMNode->lastChild

Function: Get the last child node of the node

　2. XMLReader

a. XMLReader::XML

Function: Load xml string

Usage: XMLReader::xml(string source [, string encoding [, int options]] )

Parameters: source, xml string; encoding, document encoding or NULL

Return: TRUE if successful, FALSE if failed.

b. XMLReader::open

Function: Load xml file

Usage: XMLReader::open(string url [, string encoding [, int options]] )

Parameters: url, link to xml; encoding, document encoding or NULL

Return: TRUE if successful, FALSE if failed.

c. XMLReader::read

Function: Read xml and make the parser advance to the next tag

Usage: XMLReader::read(), traverse the entire document in a while loop

Parameter: NULL

Return: TRUE if successful, FALSE if failed.

　d. XMLReader::getAttribute

Function: Get attributes

Usage: XMLReader::getAttribute(string name)

Parameters: name, attribute name

Return: Returns the attribute value if successful, returns FALSE if failed.

e. XMLReader::isValid

Function: Check whether the xml is legal

Usage: XMLReader::isValid()

Parameters: None

Return: true if successful, FALSE if failed.

　f. XMLReader::moveToAttribute

Function: Move focus to the pointed attribute

Usage: XMLReader::moveToAttribute(string name)

Parameters: name, attribute name

Return: true if successful, FALSE if failed.

g、XMLReader::moveToFirstAttribute

Function: Move focus to the first attribute

Usage: XMLReader::moveToFirstAttribute()

Parameters: None

Return: true if successful, FALSE if failed.

h、XMLReader::moveToNextAttribute

Function: Move focus to the next attribute

Usage: XMLReader::moveToNextAttribute()

Parameters: None

Return: true if successful, FALSE if failed.

i. XMLReader::moveToElement

Function: Move focus to the current attribute of the parent node

Usage: XMLReader::moveToElement()

Parameters: None

Return: true if successful, FALSE if failed.

j、XMLReader::close

Function: Close xml input

Usage: XMLReader::close()

Parameters: None

Return: true if successful, FALSE if failed.

　——————-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 ;

Function: Number of attributes

b. XMLReader->baseURI;

Function: node url

c. XMLReader->depth ;

Function: The number of layers of the node tree

　d. XMLReader->hasAttributes;

Function: Check whether there are attributes

e. XMLReader->hasValue;

Function: Whether it has value

　f. XMLReader->isEmptyElement;

Function: Whether it is an empty tag

g、XMLReader->localName;

Function: Label inside the label

h、XMLReader->name ;

Function: Tag name

i. XMLReader->nodeType;

Function: Node type

j、XMLReader->value ;

Function: Node text content

3. XMLWriter

a. XMLWriter::openURI

Function: Create a new XMLWriter from the url output code

Usage: XMLWriter::openURI(string uri)

Parameters: url xml address

Return: true if successful, FALSE if failed.

b. XMLWriter::setIndentString

Function: Set the indent character

Usage: XMLWriter::setIndentString(string indentString)

Parameter: indentString indent character

Return: true if successful, FALSE if failed.

c. XMLWriter::setIndent

Function: Set the indent switch

Usage: XMLWriter::setIndent(bool indent)

Parameter: indent whether to indent or not

Return: true if successful, FALSE if failed.

d. XMLWriter::startDocument

Function: Set the document start tag

Usage: XMLWriter::startDocument( [string version [, string encoding [, string standalone]]] )

Parameters: version, version; encoding, encoding; standalone, independent

Return: true if successful, FALSE if failed.

e. XMLWriter::endDocument

Function: Set the document end tag

Usage: XMLWriter::endDocument( )

Parameters: None

Return: true if successful, FALSE if failed.

　f. XMLWriter::startDTD

Function: Set the dtd start tag

Usage: XMLWriter::startDTD( string qualifiedName [, string publicId [, string systemId]] )

Parameters: qualifiedName, name; publicId, piublic; systemId, system

Return: true if successful, FALSE if failed.

g、XMLWriter::endDTD

Function: Set the dtd end tag

Usage: XMLWriter::endDTD()

Parameters: None

Return: true if successful, FALSE if failed.

h、XMLWriter::startElement

Function: Set the start tag

Usage: XMLWriter::startElement(string name)

Parameters: name, label name

Return: true if successful, FALSE if failed.

i. XMLWriter::endElement

Function: Set the closing tag

Usage: XMLWriter::endElement()

Parameters: None

Return: true if successful, FALSE if failed.

j、XMLWriter::startCData

Function: Set the start tag

Usage: XMLWriter::startCData()

Parameters: None

Return: true if successful, FALSE if failed.

k、XMLWriter::endCData

Function: Set the closing tag

Usage: XMLWriter::endCData ()

Parameters: None

Return: true if successful, FALSE if failed.

l. XMLWriter::writeAttribute

Function: Write tag attributes

Usage: XMLWriter::writeAttribute (string name, string value)

Parameters: name, attribute name; value, attribute value

Return: true if successful, FALSE if failed.

m、XMLWriter::writeElement

Function: Write tag attributes

Usage: XMLWriter::writeElement (resource xmlwriter, string name, string content)

Parameters: xmlwriter, xml resource; name, tag name; value, text value

Return: true if successful, FALSE if failed.

n. XMLWriter::writeCData

Function: Write tag attributes

Usage: XMLWriter::writeCData (resource xmlwriter, string content)

Parameters: xmlwriter, xml resource; value, text value

Return: true if successful, FALSE if failed.

o、XMLWriter::text

Function: Write text

Usage: XMLWriter::text (string content)

Parameters: content, text value

Return: true if successful, FALSE if failed.

p、XMLWriter::flush

Function: Clear cache

Usage: XMLWriter::flush ( )

Parameters: None

Return: true if successful, FALSE if failed.

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