Generate xml file using php but ampersand is not displaying

Question

My php code generate xml file but the line that has the ampersand in the url is not displaying. Below is the php code

$dom = new DOMDocument('1.0','UTF-8');
$dom->formatOutput = true;

$root = $dom->createElement('journal');
$dom->appendChild($root);

$journal_metadata = $dom->createElement('journal_metadata');
$dom->appendChild($journal_metadata);

$issue_doi = $dom->createElement('doi', '11');
$issue_doi_data->appendChild($issue_doi);

$issue_resource = $dom->createElement('resource', 'http://localhost/fo/issues.php?jid=1&issueID=155');
$issue_doi_data->appendChild($issue_resource);


echo '<xmp>'. $dom->saveXML() .'</xmp>';
$dom->save('result.xml') or die('XML Create Error');

Possible duplicate of [CakePHP Xml utility library triggers DOMDocument warning](http://stackoverflow.com/questions/22956330/cakephp-xml-utility-library-triggers-domdocument-warning) — ThW, Feb 13 '16 at 22:03

score 0 · Answer 1 · edited Dec 21 '20 at 06:13

0

You will have to "escape" it. Try using: & instead of just &.

edited Dec 21 '20 at 06:13

John

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answered Feb 13 '16 at 21:27

Yotam Omer

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when I changed it to $issue_resource = $dom->createElement('resource', 'http://localhost/fo/issues.php?jid=1&issueID=155'); $issue_doi_data->appendChild($issue_resource); it displays http://localhost/fo/issues.php?jid=1&issueID=155 – ali79 Feb 13 '16 at 21:44

RomanPerekhrest · Answer 2 · 2016-02-16T21:30:41.700

The line that has "url with ampersand" isn't displaying because $issue_doi_data variable which should contain that url was not declared and not appended to the initial document $dom.
Secondly, in case of getting warning message "unterminated entity reference" you may use htmlentities() (or htmlspecialchars()) for escaping supplied value.
Change your code as shown below:

$dom = new \DOMDocument('1.0','UTF-8');
$dom->formatOutput = true;

$root = $dom->createElement('journal');
$dom->appendChild($root);

$journal_metadata = $dom->createElement('journal_metadata', '...');
$root->appendChild($journal_metadata);

// modify this line with your prefered name and value
$issue_doi_data = $dom->createElement('doi_data', '');

$issue_doi = $dom->createElement('doi', '11');
$issue_doi_data->appendChild($issue_doi);

$issue_resource = $dom->createElement('resource', htmlspecialchars('http://localhost/fo/issues.php?jid=1&issueID=155'));
$issue_doi_data->appendChild($issue_resource);
$root->appendChild($issue_doi_data);

// save xml into file
$dom->save('result.xml') or die('XML Create Error');
// outputting xml file content
echo '<xmp>'. html_entity_decode(file_get_contents('result.xml')) .'</xmp>';

// the output:
 <?xml version="1.0" encoding="UTF-8"?>
    <journal>
      <journal_metadata>...</journal_metadata>
      <doi_data>
        <doi>11</doi>
        <resource>http://localhost/fo/issues.php?jid=1&issueID=155</resource>
      </doi_data>
    </journal>

Thanks for your comments. I want my output to display & instead of & — ali79, Feb 13 '16 at 22:05
thanks for your comments. it is working but the closing tag for journal and journal_metadata is not displaying in the output. Please help me resolve. Thanks — ali79, Feb 16 '16 at 21:10
xml markup(structure) should always provide the "root" element, which contains all the other elements. If 'journal' is intended as root essence then it should be filled appropriately. Check my update — RomanPerekhrest, Feb 16 '16 at 21:30

Generate xml file using php but ampersand is not displaying

2 Answers2