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

Source: Internet
Author: User
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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:

  1. <? XML version= "1.0" encoding="UTF-8"?>
  2. <root>
  3. <arrayList>
  4. <array>
  5. <src>images/banner.jpg</src>
  6. <newpirce>12.00</newpirce>
  7. <oldprice>30.00</oldprice>
  8. </Array>
  9. <array>
  10. <src>images/banner.jpg</src>
  11. <newpirce>12.00</newpirce>
  12. <oldprice>30.00</oldprice>
  13. </Array>
  14. </arrayList>
  15. </root>

2. How to get the XML file in PHP: ①header to write Text/xml. 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  
    1. var xhr = new XMLHttpRequest;
    2. Xhr.open (' get ',' 01.php ');
    3. Xhr.send (null);
    4. Xhr.onreadystatechange = function () {
    5. if (xhr.status = = && Xhr.readystate = = 4) {
    6. / * Gets the content returned to the XML format as a DOM object document*/
    7. var xml = Xhr.responsexml;
    8. / * You can get the data to XML via the selector * /
    9. Console.log (Xml.queryselectorall (' array ') [0].queryselector (' src '). InnerHTML);
    10. }
    11. }

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

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