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Fix #741 do not allow empty HTML content in document and comment

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Kijin Sung 2017-03-06 10:50:06 +09:00
parent 29f2f6a47f
commit 387dd1f78b
6 changed files with 49 additions and 0 deletions
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15
common/functions.php
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@ -608,3 +608,18 @@ function utf8_trim($str)
{
return preg_replace('/^[\s\pZ\pC]+|[\s\pZ\pC]+$/u', '', $str);
}
/**
* Check if HTML content is empty.
* This function checks whether any printable characters remain
* after removing all tags except images, videos, iframes, etc.
*
* @param string $str The input string
* @return bool
*/
function is_empty_html_content($str)
{
$str = strip_tags($str, '<img><audio><video><iframe><object><embed>');
$str = utf8_trim(utf8_clean(html_entity_decode($str, ENT_QUOTES, 'UTF-8')));
return $str === '';
}