Use the DOM to control XML in PHP5

The PHP5 enhances XML support and uses the DOM to extend the energy resistance of XML operations. These functions are part of the PHP5 core without being installed.

The following example shows the operation of the DOM on XML, explained in detail, please see the comments in the code LOAD ("test.xml"); // Output XML file // header ("Content-Type: Text / XML; CHARSET = GB2312"); // Echo $ DOM -> Savexml (); // Save XML file, return value Int (file size, byte Unit) // $ DOM -> Save ("newfile.xml"); echo "

---

acquired all Title elements:

---

"; $ titles = $ dom -> getElementsBytagname ("Title"); Foreach ($ TITLES AS $ Node) {Echo $ Node -> textContent. "<"; // This can also // echo $ node-> firstchild-> data. "} / * Echo "

---

spread all the nodes from root nodes:" "" "for"; "For" ($ dom-> documentelement-> childnodes as $ items) {// If the node is an element (Nodetype == 1) and The name is Item continues loop if ($ items-> nodetype == 1 && $ items-> nodename == "item") {foreach ($ item-> childnodes as $ titles) {// If the node is an element, and The name is Title to print it. IF ($ titles-> nodetype == 1 && $ titles-> nodename == "title") {Print $ titles-> textcontent. "/ N";}}}} * / / Using XPath Query Data Echo "

---

Title node queryed using XPath RESULTS:

---

"; $ xpath = new domxpath ($ DOM); $ titles = $ xpath-> query (" / r s / channel / item / title "); Foreach ($ titles as $ node) {Echo $ Node-> textContent. "} / * This is similar to using the getElementSbyTagname () method, but XPath is much more in-depth might be like this: / rss / channel / item [position () =

1] / Title Returns all / RSS / Channel / Item / Title [@ID = '23'] returns all Articles with all Articles containing the ID attribute and the value of 23. Element below Title (Translator Note: & Folder & Represents Directory Depth) * / / Write new data to DOM $ item = $ DOM-> CreateElement ("item"); $ title = $ dom-> CreateElement ("Title "); $ titleText = $ DOM-> CreateTextNode (" Title Text "); $ Title-> Appendchild ($ Titletext); $ item-> appendchild ($ title); $ dom-> documentelement-> getElementsBytagname ('Channel' ) -> item (0) -> appendchild ($ item); // Remove node from DOM / / $ DOM-> DocumentElement-> RemoveChild ($ DOM-> DocumentElement-> getElementsBytagname ("CHANNEL") -> ITEM 0); // or use XPath to query the node and then delete / / $ dom-> DocumentElement-> RemoveChild ($ xpath-> query ("/ ts / channel") -> item (0)); // $ DOM -> Save ("newfile.xml"); // Modify Node Data / / Modify the first title data from DOM // This place is stupid, and create a node and then replace the old node. If a friend has other good way, please tell me $ firsttitle = $ xpath-> query ("/ rss / channel / item / title") -> item (0); $ newTITETELE = $ DOM-> CreateElement "Title"; $ newTitle-> appendchild (New Domtext ("This's The New Title Text !!!)); $ firstTitle-> ParentNode-> Replacechild ($ newTitle, $ firsttitle); // Modify Properties / / $ FirstTITITLE = $ XPATH-> Query ("/ RSS / Channel / Item / Title") -> Item (0); // $ firstTTITLE-> SetAttribute ("Orderby", "4"); $ DOM-> Save (" Newfile.xml "); echo"

---

View newfile.xml "; // The following code gets and parsing the home page of PHP.NET, will return The content of the first Title element.

/ * "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" /?> The following is Test.xml file code: