Generating XML document in PHP (escape characters)

by

I created simple function that escapes with the five “predefined entities” that are in XML:

function xml_entities($string) {
    return strtr(
        $string, 
        array(
            "<" => "&lt;",
            ">" => "&gt;",
            '"' => "&quot;",
            "'" => "&apos;",
            "&" => "&amp;",
        )
    );
}

Usage example Demo:

$text = "Test &amp; <b> and encode </b> :)";
echo xml_entities($text);

Output:

Test &amp;amp; &lt;b&gt; and encode &lt;/b&gt; :)

A similar effect can be achieved by using str_replace but it is fragile because of double-replacings (untested, not recommended):

function xml_entities($string) {
    return str_replace(
        array("&",     "<",    ">",    '"',      "'"),
        array("&amp;", "&lt;", "&gt;", "&quot;", "&apos;"), 
        $string
    );
}

More Related Contents:

  1. How do you parse and process HTML/XML in PHP?
  2. How to generate XML file dynamically using PHP?
  3. A simple program to CRUD node and node values of xml file [closed]
  4. Remove a child with a specific attribute, in SimpleXML for PHP
  5. PHP convert XML to JSON
  6. Forcing a SimpleXML Object to a string, regardless of context
  7. How to resolve cURL Error (7): couldn’t connect to host?
  8. How to parse SOAP XML?
  9. PHP namespace simplexml problems
  10. Implementing condition in XPath [duplicate]
  11. How do I capture PHP output into a variable?
  12. Remove empty tags from a XML with PHP
  13. How can I set text value of SimpleXmlElement without using its parent?
  14. Using SimpleXML to read RSS feed
  15. PHP SimpleXML: insert node at certain position
  16. How to echo XML file in PHP
  17. ‘xmlParseEntityRef: no name’ warnings while loading xml into a php file
  18. format xml string
  19. Send XML data to webservice using php curl
  20. Merge XML files in PHP
  21. Loop through an XML object with SimpleXML
  22. Simplify PHP DOM XML parsing – how?
  23. How to get attribute of node with namespace using SimpleXML? [closed]
  24. Printing content of a XML file using XML DOM
  25. How do I see the actual XML generated by PHP SOAP Client Class?
  26. Format output of $SimpleXML->asXML(); [duplicate]
  27. How to save changed SimpleXML object back to file?
  28. Remove &amp from string when writing to xml in PHP
  29. How to parse SOAP response without SoapClient
  30. How can I send SOAP XML via Curl and PHP?

Leave a Comment