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SimpleXMLElementExtended.php
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SimpleXMLElementExtended.php
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<?php
/**
* Class SimpleXMLElementExtended
*
* A simple extended version of SimpleXMLElement that adds CDATA whenever necessary
*
* @author Ronald Edelschaap <rlwedelschaap@gmail.com> <first author>
* @updated 01-05-2016
* @license http://www.gnu.org/licenses/gpl-2.0 GPL v2.0
* @version 1.1
*/
class SimpleXMLElementExtended extends SimpleXMLElement {
/**
* @inheritdoc SimpleXMLElement::addChild
*
* @return SimpleXMLElement|SimpleXMLElementExtended
*/
public function addChild( $name, $value = null, $namespace = null ) {
$_value = self::filterUnicodeCharacters( (string) $value );
$_value = self::replaceHTMLSpecialChars( $_value, true );
if ( $_value !== '' && ( strpos( $_value, '<' ) !== false || strpos( $_value, '>' ) !== false || strpos( $_value, '&' ) !== false || strpos( $_value, '"' ) !== false ) ) {
$child = $this->addChild( $name, null, $namespace );
$child->addCData( $value );
return $child;
}
return parent::addChild( $name, $value, $namespace );
}
/**
* Add CDATA text in a node
*
* @param string $value The value to add
*/
private function addCData( $value ) {
$node = dom_import_simplexml( $this );
$owner = $node->ownerDocument;
$node->appendChild( $owner->createCDATASection( $value ) );
}
/**
* @param string $string
*
* @return string
*/
private static function filterUnicodeCharacters( $string ) {
return preg_replace( '/[^\x{0009}\x{000a}\x{000d}\x{0020}-\x{D7FF}\x{E000}-\x{FFFD}]+/u', ' ', $string );
}
/**
* Replaces html characters with their html codes, or reversed when $reversed is TRUE
*
* @param array|string $html
* @param bool $reversed
*
* @return array|string Returns the converted result
*/
private static function replaceHTMLSpecialChars( $html, $reversed = false ) {
/** @noinspection PhpDuplicateArrayKeysInspection */
$special_chars = [
'&' => '&',
'"' => '"',
'"' => '"',
'‘' => '‘',
'‘' => ''',
'’' => '’',
'"' => '"',
'\'' => ''',
'\'' => ''',
'‚' => '‚',
'“' => '“',
'”' => '”',
'„' => '„',
'†' => '†',
'‡' => '‡',
'‰' => '‰',
'‹' => '‹',
'›' => '›',
'♠' => '♠',
'♣' => '♣',
'♥' => '♥',
'♦' => '♦',
'‾' => '‾',
'←' => '←',
'↑' => '↑',
'→' => '→',
'↓' => '↓',
'™' => '™',
'“' => '"',
'%' => '%',
'<' => '<',
'>' => '>',
'`' => '`',
'~' => '~',
'—' => '-',
'–' => '-',
'-' => '-',
'¢' => '¢',
'£' => '£',
'€' => '€',
'¤' => '¤',
'¥' => '¥',
'¦' => '¦',
'§' => '§',
'¨' => '¨',
'©' => '©',
'ª' => 'ª',
'«' => '«',
'¬' => '¬',
'®' => '®',
'¯' => '¯',
'°' => '°',
'±' => '±',
'²' => '²',
'³' => '³',
'´' => '´',
'µ' => 'µ',
'¶' => '¶',
'·' => '·',
'¸' => '¸',
'¹' => '¹',
'º' => 'º',
'»' => '»',
'¼' => '¼',
'½' => '½',
'¾' => '¾',
'À' => 'À',
'Á' => 'Á',
'Â' => 'Â',
'Ã' => 'Ã',
'Ä' => 'Ä',
'Å' => 'Å',
'Æ' => 'Æ',
'Ç' => 'Ç',
'È' => 'È',
'É' => 'É',
'Ê' => 'Ê',
'Ë' => 'Ë',
'Ğ' => 'Ğ',
'Ì' => 'Ì',
'Í' => 'Í',
'Î' => 'Î',
'Ï' => 'Ï',
'Ð' => 'Ð',
'Ñ' => 'Ñ',
'Ò' => 'Ò',
'Ó' => 'Ó',
'Ô' => 'Ô',
'Õ' => 'Õ',
'Ö' => 'Ö',
'×' => '×',
'Ø' => 'Ø',
'Ù' => 'Ù',
'Ú' => 'Ú',
'Û' => 'Û',
'Ü' => 'Ü',
'Ý' => 'Ý',
'Þ' => 'Þ',
'ß' => 'ß',
'à' => 'à',
'á' => 'á',
'â' => 'â',
'ã' => 'ã',
'ä' => 'ä',
'å' => 'å',
'æ' => 'æ',
'ç' => 'ç',
'è' => 'è',
'é' => 'é',
'ê' => 'ê',
'ë' => 'ë',
'ğ' => 'ğ',
'ì' => 'ì',
'í' => 'í',
'î' => 'î',
'ï' => 'ï',
'ð' => 'ð',
'ñ' => 'ñ',
'ò' => 'ò',
'ó' => 'ó',
'ô' => 'ô',
'õ' => 'õ',
'ö' => 'ö',
'÷' => '÷',
'ø' => 'ø',
'ù' => 'ù',
'ú' => 'ú',
'û' => 'û',
'ü' => 'ü',
'ý' => 'ý',
'þ' => 'þ',
'ÿ' => 'ÿ',
];
if ( $reversed === true ) {
$special_chars = array_flip( $special_chars );
}
if ( is_array( $html ) ) {
foreach ( $html as &$data_val ) {
$data_val = self::replaceHTMLSpecialChars( $data_val, $reversed );
unset( $data_val );
}
} else {
foreach ( $special_chars as $key => $value ) {
$html = str_ireplace( $key, $value, $html );
}
}
return $html;
}
}