我正在从 mysql 数据库获取数据到 XML 文件。我正在使用以下 PHP 代码来获取输出。
PHP 代码:
<?php
mysql_connect('localhost', 'root', '');
mysql_select_db('emptestdb');
$sql = "SELECT name, username, DATE(visitdate) AS vdate, DATE(retdate) AS rdate, location FROM users";
$res = mysql_query($sql);
header("Content-Type: text/html/force-download");
header("Content-Disposition: attachment; filename='EMP_RECORDS.xml'");
$xml = new XMLWriter();
$xml->openURI("php://output");
$xml->startDocument('1.0','UTF-8');
$xml->setIndent(true);
$xml->startElement('engineers');
while ($row = mysql_fetch_assoc($res)) {
$xml->startElement("engineer");
$xml->writeAttribute('engID', $row['username']);
$xml->writeAttribute('engName', $row['name']);
$xml->startElement("location");
$xml->writeAttribute('fieldLoc', $row['location']);
$xml->writeElement('vistiDate',$row['vdate']);
$xml->writeElement('retDate',$row['rdate']);
$xml->endElement();
$xml->endElement();
}
$xml->endElement();
header('Content-type: text/xml');
$xml->flush();
?>
在使用上面的代码时,我得到以下输出 XML 输出。
当前输出:
<?xml version="1.0" encoding="UTF-8"?>
<engineers>
<engineer engID="1" engName="John">
<location fieldLoc="Geneva">
<vistiDate>2015-01-23</vistiDate>
<retDate>2015-06-28</retDate>
</location>
</engineer>
<engineer engID="1" engName="John">
<location fieldLoc="Paris">
<vistiDate>2015-02-12</vistiDate>
<retDate>2015-02-17</retDate>
</location>
</engineer>
<engineer engID="2" engName="Josh">
<location fieldLoc="Paris">
<vistiDate>2015-02-12</vistiDate>
<retDate>2015-02-17</retDate>
</location>
</engineer>
<engineer engID="3" engName="Rita">
<location fieldLoc="Paris">
<vistiDate>2015-02-12</vistiDate>
<retDate>2015-02-17</retDate>
</location>
</engineer>
</engineers>
我正在尝试对 engID 进行分组并获得以下输出
期望的输出:
<?xml version="1.0" encoding="UTF-8"?>
<engineers>
<engineer engID="1" engName="John">
<location fieldLoc="Geneva">
<vistiDate>2015-01-23</vistiDate>
<retDate>2015-06-28</retDate>
</location>
<location fieldLoc="Paris">
<vistiDate>2015-02-12</vistiDate>
<retDate>2015-02-17</retDate>
</location>
</engineer>
<engineer engID="2" engName="Josh">
<location fieldLoc="Paris">
<vistiDate>2015-02-12</vistiDate>
<retDate>2015-02-17</retDate>
</location>
</engineer>
<engineer engID="3" engName="Rita">
<location fieldLoc="Paris">
<vistiDate>2015-02-12</vistiDate>
<retDate>2015-02-17</retDate>
</location>
</engineer>
</engineers>
有人可以指导我如何将它们组合在一起。 谢谢。
最佳答案
一个不太坏的想法应该是
- 处理您的数据并保存
生成你的 xml
$engineers = []; // process data while ($row = mysql_fetch_assoc($res)) { if (!isset($engineers[$row['username']])) { $engineers[$row['username']] = [ 'name' => $row['name'], 'locations' => [], ]; } $engineers[$row['username']]['locations'][] = [ $xml->writeAttribute('fieldLoc', $row['location']); 'vistiDate' => $row['vdate'], 'retDate' => $row['rdate']); ]; } // generate xml foreach ($engineers as $engineer) { // add engineer info to xml foreach ($engineer['locations'] as $location) { // add location to xml } }
关于PHP从mysql数据库输出数据到XML文件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31043658/