note 84280 deleted from function.htmlentities by danbrown
| From: | danbrown@php.net | Date: | Sun, 17 May 2009 16:49:22 +0000 |
| Subject: | note 84280 deleted from function.htmlentities by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-154891@lists.php.net to get a copy of this message | ||
Note Submitter: keenskelly at gmail dot com
----
So here's something fun: if you create an XML document in PHP and use htmlentities() to encode
text data, then later want to read and parse the same document with PHP's xml_parse(), unless
you include entity declarations into the generated document, the parser will stop on the unknown
entities.
To account for this, I created a small function to take the translation table and turn it into XML
<!ENTITY> definitions. I insert this output into the XML document immediately after the
<?xml?> line and the parse errors magically vanish:
// Generate a list of entity declarations from the HTML_ENTITIES set that PHP knows about to dump
into the document
function htmlentities_entities() {
$output = '';
foreach (get_html_translation_table(HTML_ENTITIES) as $value) {
$name = substr($value, 1, strlen($value) - 2);
switch ($name) {
// These ones we can skip because they're built into XML
case 'nbsp':
case 'gt':
case 'lt':
case 'quot':
case 'apos':
case 'amp': break;
default: $output .= "<!ENTITY {$name}
\"&{$name};\">\n";
}
}
return($output);
}