Load, edit and update xml file by html form php

Question

I'm trying to make a script to read an XML file, insert it in a form and edit and update the values using php.

The form loads the present data, but does not update them.

Can anyone tell me a tip? Thanks Maurizio

file XML

<?xml version="1.0" encoding="UTF-8"?>
<myxml>

  <data name="en_title"><![CDATA[mytitle]]></data>
  <data name="en_scene_title"><![CDATA[ES000021903]]></data>

</myxml>

file edit PHP

<?php
$form_fields  = null;
$data = simplexml_load_file('messages_en.xml');
foreach($data->data as $field)
{

  $form_fields .= '<div>';
    $form_fields .=  '<label>' .$field['name'] . ' </label>';
    $form_fields .=  '<input type="text" id="' .$field['name'] . '"placeholder="'.htmlentities($field).'" name="'.$field. '" />';
    $form_fields .= '</div>';
  }
  ?>
  <!DOCTYPE html>
  <html>
  <head>
    <style>
      form { font-size: 16px; }
      form div { margin: .3em; }
      legend { font-weight: bold; font-size: 20px; }
      label { display:inline-block; width: 140px; }
    </style>
  </head>
  <body>
    <form method="POST" action="process.php">
      <legend> Enter Contact Information</legend>
      <?php echo $form_fields; ?>
      <input type="submit" name="submit" value="Upload" class="btn"  />
    </form>
  </body>
  </html>

code file process.php

<?php
    $xml = file_get_contents('messages_en.xml');
    $sxml = simplexml_load_string($xml);
    if(isset($sxml->item[$_POST['name']])) {
        $node->data = $_POST['name'];
    }
    file_put_contents('messages_en.xml', $sxml->asXML());
?>

Also, I'm not familiar with SimpleXML but isn't $sxml going to contain an array of the two data elements? — miken32
– miken32, Commented Nov 23, 2019 at 20:42

miken32 · Accepted Answer · 2019-11-24 04:38:57Z

1

Do you want to update the XML based on the name attribute of the <data> element?

If so, you need to a) pass both the name and the value from your HTML, and b) search for the name you want.

$var = $_POST["name"];
$val = $_POST["value"];

$xml = file_get_contents("messages_en.xml");
$dom = new DomDocument();
$dom->loadXml($xml);
$xpath = new DomXpath($dom);
// find the data element with the matching attribute
$node = $xpath->query("/myxml/data[@name='$var']");
// assume there's only one, otherwise we can loop
// clear the existing content
$node[0]->textContent = "";
// create a new CDATA section
$node[0]->appendChild($dom->createCDATASection($val));
// save the updated XML
file_put_contents("messages_en.xml", $dom->saveXml());

edited Nov 24, 2019 at 4:38

answered Nov 23, 2019 at 20:55

miken32

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3 Comments

Maurizio Over a year ago

Thanks for reply, I need to change the value inside tag ( in bold ) example : <data name="en_title"><![CDATA[mytitle]]></data> is it possible to do so?, unfortunately the xml file is not generated by me and I cannot change it. thx

miken32 Over a year ago

You don't really need the CDATA section, but there it is anyway.

Maurizio Over a year ago

The script works, but not in my server, the module does not pass the variables from the module ... what could it be?

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