PHP add data to XML file for simple instance sharing

This article mainly introduces the PHP to add data to the XML file of a simple example, interested in a friend's reference, I hope to be helpful to everyone.

XML file: Stu.xml:

<?xml version= "1.0" encoding= "Utf-8"?><alldata><xueshengmen><xuesheng> <name> Zhang San < /name> <yuwen>80</yuwen> <shuxue>90</shuxue> <yingyu>70</yingyu></ xuesheng><xuesheng> <name> John Doe </name> <yuwen>60</yuwen> <shuxue>90</ Shuxue> <yingyu>75</yingyu></xuesheng></xueshengmen></AllData>

The above file Stu.xml provides some *.

Now you need to add a Zongfen property to each Xuesheng node and its value equals the value of Yuwen+shuxue+yingyu.

As shown below:

<?xml version= "1.0" encoding= "Utf-8"?><alldata><xueshengmen><xuesheng> <name> Zhang San < /name> <yuwen>80</yuwen> <shuxue>90</shuxue> <yingyu>70</yingyu> < zongfen>240</zongfen></xuesheng><xuesheng> <name> John Doe </name> <yuwen>60</ yuwen> <shuxue>90</shuxue> <yingyu>75</yingyu> <zongfen>2225</zongfen>< /xuesheng></xueshengmen></alldata>

Using PHP to achieve:

<?php$doc = new DOMDocument (); $doc->load (' stu.xml '); $students = $doc->getelementsbytagname ("Xuesheng"); foreach ($students as $stu) {$yuwen = $stu->getelementsbytagname ("Yuwen")->item (0)->nodevalue; $shuxue = $stu- >getelementsbytagname ("Shuxue")->item (0)->nodevalue; $yingyu = $stu->getelementsbytagname ("Yingyu")->item (0)->nodevalue; $zongfen = $stu->getelementsbytagname ("Zongfen")->item (0)->nodevalue; if ($zongfen) {  echo "node already exists, no longer added!";  Continue } $zongfen = $yuwen + $shuxue + $yingyu; $newNode = $doc->createelement ("Zongfen", $zongfen); $stu->appendchild ($newNode); } $result = $doc->savexml (' stu.xml ');? >

Summary: The above is the entire content of this article, I hope to be able to help you learn.