
php 如何过滤掉xml中的特殊字符
1个回答
2014-11-09
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function xmlentities( $string, $quote_style = ENT_QUOTES )
{
static $trans;
// remove all html entities before xml encoding
// must convert all quotes to avoid remaining html entity in code
$string = html_entity_decode($string, ENT_QUOTES);
// xml encoding
if ( ! isset( $trans ) )
{
$trans = get_html_translation_table( HTML_ENTITIES, $quote_style );
foreach ( array_keys($trans) as $key )
{
$trans[$key] = '&#'.ord( $key ).';';
}
// dont translate the '&' in case it is part of &xxx;
$trans[chr(38)] = '&';
}
// after the initial translation, _do_ map standalone '&' into '&'
$str_temp = preg_replace( "/&(?![A-Za-z]{0,4}\w{2,3};|#[0-9]{2,3};)/u"
, "&"
, strtr( $string, $trans )
);
return $str_temp;
}
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