108 lines
2.7 KiB
PHP
108 lines
2.7 KiB
PHP
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<?php
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/**
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* XML support functions
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*
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* @package Core
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* @author Andreas Götz <cpuidle@gmx.de>
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* @version $Id: xml.core.php,v 1.8 2013/04/26 15:09:35 andig2 Exp $
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*/
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/**
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* See http://feedvalidator.org/docs/error/InvalidRFC2822Date.html
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*/
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$GLOBALS['rss_timestamp_format'] = 'D, j M Y H:i:s O';
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/**
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* Encodes HTML entities into XML character entities
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* this avoids problems with unknown entities in XML
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*
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* @param string $string HTML string to encode
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* @return string encoded string containing XML character entities
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*/
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function encode_character_entities($string)
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{
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return strtr($string, get_html_translation_table(HTML_SPECIALCHARS));
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# return strtr($string, array_flip(get_html_translation_table(HTML_SPECIALCHARS)));
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}
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/**
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* Create an XML tag
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*
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* @param string $tag XML tag name
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* @param string $value value for XML tag
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* @param boolean $encode require encoding of tag value
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* @return string XML tag
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*/
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function createTag($tag, $value, $encode = true)
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{
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if ($encode) $value = encode_character_entities($value);
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return "<$tag>".$value."</$tag>\n";
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}
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function createContainer($tag, $value = '')
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{
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return createTag($tag, $value, false);
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}
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/**
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* Convert MySQL Date to RSS timestamp
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*
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* @return string RFC 2822 Date (http://feedvalidator.org/docs/error/InvalidRFC2822Date.html)
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*/
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function rss_timestamp($timestamp)
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{
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global $rss_timestamp_format;
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// Lets sort this nasty timestamp nonsense out ;D
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$y = substr($timestamp, 0, 4);
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$m = substr($timestamp, 5, 2);
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$d = substr($timestamp, 8, 2);
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$h = substr($timestamp, 11, 2);
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$min = substr($timestamp, 14, 2);
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$s = substr($timestamp, 17, 2);
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$timestamp = mktime($h, $min, $s, $m, $d, $y);
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return date($rss_timestamp_format, $timestamp);
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}
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/**
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* Load XML into SimpleXML object
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* Fixes potential encoding issue
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*/
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function load_xml($data)
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{
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$xml = simplexml_load_string($data, $root = 'SimpleXMLElement', LIBXML_NOCDATA);
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// character encoding warning- hack
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if ($xml === false)
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{
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$error = error_get_last();
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# dump($error);
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// this is nasty- sometimes simplexml_load_string fails but doesn't raise an error
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if (preg_match('/simplexml_load_string/i', $error['message']))
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{
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$xml = simplexml_load_string(utf8_encode($data), $root, LIBXML_NOCDATA);
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}
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}
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return $xml;
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}
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/**
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* Concatenate string-converted xml entities
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*/
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function xml_join($items, $str = "\n")
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{
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foreach ($items as $item)
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{
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if ($data) $data .= $str;
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$data .= (string) $item;
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}
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return $data;
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}
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?>
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