How to remove HTML tags in PHP?-PHP Problem-php.cn

How to remove HTML tags in PHP?

Guanhui

Release： 2023-03-01 15:18:02

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How to remove HTML tags in PHP?

PHP如何去掉HTML标签？

在PHP中可以使用“strip_tags()”函数去掉HTML标签，该函数作用是从字符串中去除HTML和PHP标记，其语法是“strip_tags(str) ”，其参数str代表的是要去除标记的字符串，返回值为处理后的字符串。

演示示例

Test paragraph.
 Other text';
echo strip_tags($text);
echo "\n";
// 允许  和 
echo strip_tags($text, '
');
?>

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以上例程会输出：

Test paragraph. Other text
Test paragraph.
 Other text

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使用示例

/si', trim($tags), $tags);
  $tags = array_unique($tags[1]);
   
  if(is_array($tags) AND count($tags) > 0) {
    if($invert == FALSE) {
      return preg_replace('@<(?!(?:'. implode('|', $tags) .')\b)(\w+)\b.*?>.*?@si', '', $text);
    }
    else {
      return preg_replace('@<('. implode('|', $tags) .')\b.*?>.*?@si', '', $text);
    }
  }
  elseif($invert == FALSE) {
    return preg_replace('@<(\w+)\b.*?>.*?@si', '', $text);
  }
  return $text;
}
?>

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loadHTML($html_str, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD)){
    foreach ($xml->getElementsByTagName("*") as $tag){
      if (!in_array($tag->tagName, $allowed_tags)){
        $tag->parentNode->removeChild($tag);
      }else{
        foreach ($tag->attributes as $attr){
          if (!in_array($attr->nodeName, $allowed_attrs)){
            $tag->removeAttribute($attr->nodeName);
          }
        }
      }
    }
  }
  return $xml->saveHTML();
}

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