XML (How to get an XML file in PHP/ajax how to get the response data in XML format)

1. XML Format specification: ① must have a root element ② cannot have spaces, cannot be in numbers or. Start, case sensitive ③ non-overlapping nesting ④ Attribute double quotation marks (the browser is automatically corrected into double quotes) ⑤ Special symbols to use entities ⑥ annotations are the same as HTML Although complex data can be described and transmitted, its resolution is too complex and large, so implementation is rarely used.  

Cases:

2. <? XML version= "1.0" encoding="UTF-8"?>
4. <root>
6. <arrayList>
8. <array>
10. <src>images/banner.jpg</src>
12. <newpirce>12.00</newpirce>
14. <oldprice>30.00</oldprice>
16. </Array>
18. <array>
20. <src>images/banner.jpg</src>
22. <newpirce>12.00</newpirce>
24. <oldprice>30.00</oldprice>
26. </Array>
28. </arrayList>
30. </root>

2. How to get the XML file in PHP: ①header to write Text/xml. ② file_get_contents 获取文件内容This has been removed in over 5.4 versions. So you want to modify the file_get_contents ("Php://input") to get the value of the XML.

1. <?php
2. Header (' Content-type:text/xml;charset=utf-8 ');
3. / * Request Response content format when transferring data in XML format is text/xml*/
4. /*file_get_contents Get File contents * /
5. $xml = file_get_contents (' 01.xml ');
6. / * Output XML content * /
7. echo $xml;
8. ?>

3. Ajax How to get the response data in XML format: Responsexml  

2. var xhr = new XMLHttpRequest;
4. Xhr.open (' get ',' 01.php ');
6. Xhr.send (null);
8. Xhr.onreadystatechange = function () {
10. if (xhr.status = = && Xhr.readystate = = 4) {
12. / * Gets the content returned to the XML format as a DOM object document*/
14. var xml = Xhr.responsexml;
16. / * You can get the data to XML via the selector * /
18. Console.log (Xml.queryselectorall (' array ') [0].queryselector (' src '). InnerHTML);
20. }
22. }

XML (How to get an XML file in PHP/ajax how to get the response data in XML format)