Question

我的网站上有一个MySQL数据库，我想知道如何通过表格中的以下列的PHP获取XML输出：

UDID
国家

Answer 1

mysql_connect('server', 'user', 'pass');
mysql_select_db('database');

$sql = "SELECT udid, country FROM table ORDER BY udid";
$res = mysql_query($sql);

$xml = new XMLWriter();

$xml->openURI("php://output");
$xml->startDocument();
$xml->setIndent(true);

$xml->startElement('countries');

while ($row = mysql_fetch_assoc($res)) {
  $xml->startElement("country");

  $xml->writeAttribute('udid', $row['udid']);
  $xml->writeRaw($row['country']);

  $xml->endElement();
}

$xml->endElement();

header('Content-type: text/xml');
$xml->flush();

输出：

<?xml version="1.0"?>
<countries>
 <country udid="1">Country 1</country>
 <country udid="2">Country 2</country>
 ...
 <country udid="n">Country n</country>
</countries>

Answer 2

<?php

mysql_connect('myserver', 'username', 'password');
mysql_select_db('mydatabase');
$result = mysql_query('SELECT `udid`, `country` FROM `MyTable`');

while($data = mysql_fetch_assoc($result)) {
  foreach($data as $key => $value) {
    echo "<$key>$value</$key>";
  }
}

?>

此代码段应该为您提供良好的开端。但是如果没有想要的XML结构，就很难做得更好。

但是我不确定PHP是否适合执行此任务。许多工具，例如phpmyadmin，可以输出XML格式的mysql数据。

Answer 3

<?php

mysql_connect('myserver', 'username', 'password');
mysql_select_db('mydatabase');
$result = mysql_query('SELECT `udid`, `country` FROM `MyTable`');

$Result = "<?xml version='1.0' encoding='utf-8'?>\n<employees>\n";

while($data = mysql_fetch_assoc($Recordset1)) {
  $Result .= " <employee>\n";
  foreach($data as $key => $value) {
    $Result .=  "  <$key>$value</$key>\n";
  }
    $Result .= " </employee>\n";
}
$Result .= "</employees>\n";
echo $Result;

?>

Answer 4

我很难找到mysqli格式的解决方案，但我找不到解决方案。以下是我想到的解决方案。希望它会对某人有所帮助。

<?php
//Create file name to save
$filename = "export_xml_".date("Y-m-d_H-i",time()).".xml";

$mysql = new Mysqli('server', 'user', 'pass', 'database');
if ($mysql->connect_errno) {
    throw new Exception(sprintf("Mysqli: (%d): %s", $mysql->connect_errno, $mysql->connect_error));
}

//Extract data to export to XML
$sqlQuery = 'SELECT * FROM t1';
if (!$result = $mysql->query($sqlQuery)) {
    throw new Exception(sprintf('Mysqli: (%d): %s', $mysql->errno, $mysql->error));
}

//Create new document 
$dom = new DOMDocument;
$dom->preserveWhiteSpace = FALSE;

//add table in document 
$table = $dom->appendChild($dom->createElement('table'));

//add row in document 
foreach($result as $row) {
    $data = $dom->createElement('row');
    $table->appendChild($data);

    //add column in document 
    foreach($row as $name => $value) {

        $col = $dom->createElement('column', $value);
        $data->appendChild($col);
        $colattribute = $dom->createAttribute('name');
        // Value for the created attribute
        $colattribute->value = $name;
        $col->appendChild($colattribute);           
    }
}

/*
** insert more nodes
*/

$dom->formatOutput = true; // set the formatOutput attribute of domDocument to true 
// save XML as string or file 
$test1 = $dom->saveXML(); // put string in test1
$dom->save($filename); // save as file
$dom->save('xml/'.$filename);   
?>

Answer 5

<?php

    // Create connection
    $con=mysqli_connect("localhost","root","root","students");

    // Check connection
    if (mysqli_connect_errno())
    {
      echo "Failed to connect to MySQL: " . mysqli_connect_error();
    }

    //get student ID from URL
    $STU_ID = $_GET['id'];

    $sql = "SELECT * FROM students_info WHERE ID = ".$STU_ID;
    $res = mysqli_query($con, $sql);

    $xml = new XMLWriter();

    $xml->openURI("php://output");
    $xml->startDocument();
    $xml->setIndent(true);

    $xml->startElement('students');

    while ($row = mysqli_fetch_assoc($res)) {
      $xml->startElement("student");

      $xml->writeElement("id", $row['ID']);
      $xml->writeElement("name", $row['name']);
      $xml->writeElement("gpa", $row['GPA']);
      $xml->writeRaw($row['student']);

      $xml->endElement();
    }

    $xml->endElement();

    header('Content-type: text/xml');
    $xml->flush();

    // Free result set
    mysqli_free_result($result); 
    // Close connections
    mysqli_close($con);
?>
Output
<students>
    <student>
        <id>111</id>
        <name>sara</name>
        <gpa>4.5</gpa>
    </student>
</students>

Answer 6

与@krtek 相同，但适用于 PHP 7 及更高版本

<?php
$server='127.0.0.1';
$user='root';
$pass='mysql';
$db='mydb';
$query='SELECT `udid`, `country` FROM `MyTable`';
$mysqli = new mysqli($server, $user, $pass, $db);
$result =  $mysqli->query($query);
while ($data = $result->fetch_assoc()) {
    foreach($data as $key => $value) {
        echo "<$key>$value</$key>";
    }
}
?>

通过PHP获取MySQL数据库输出到XML

6 个答案: