从网站内容PHP过滤JavaScript [英] Filtering javascript from site content PHP
本文介绍了从网站内容PHP过滤JavaScript的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
if(isset($ _ POST ['url'])){
$ url = $ _POST ['url'];
$ str = strip_tags(file_get_contents($ url));
$ words = str_word_count(strtolower($ str),1);
$ word_count = array_count_values($ words);
foreach($ word_count as $ key => $ val){
$ density =($ val / count($ words))* 100;
echo$ key - COUNT:$ val,DENSITY:.number_format($ density,2)。%
> \\\
;
}
}
解决方案
I为此写了2个函数:
/ **
*删除所有由Html字符串提供的标签
*
* @param string $ str Html字符串
* @param字符串[] $ tagArr一个包含所有标记名的数组
*
* @return string没有标签的Html字符串
* /
函数removeTags($ str,$ tagArr)
{
foreach($ tagArr as $ tag){
$ str = preg_replace ('#<'。$ tag。'(。*?)>(。*?)< /'。$ tag。'> #is','',$ str);
}
返回$ str;
$ b $ **
清除一些html字符串
*
* @param string $ str一些html字符串
*
* @return string清理后的字符串
* /
函数filterHtml($ str)
{
//移除标签
$ str = removeTags($ str, ['script','style']);
//删除所有标签,但不包含内容
$ str = preg_replace('/< [>] *> /','',$ str);
//删除换行符和制表符
str = str_replace([\\\
,\t,\r],'',$ str);
//删除Double Whitespace
while(strpos($ str,'')!== false){
$ str = str_replace('','',$ str );
}
//返回修剪
返回修剪($ str);
$ / code>
工作示例
$ fileContent = file_get_contents('http://stackoverflow.com/questions/25537377/filtering-html-from-site-content-php');
$ filteredContent = filterHtml($ fileContent);
var_dump($ filteredContent);
So I'm making a script to check the keyword density of a page based off the URL the user submits and I have been using strip_tags but it doesn't seem to be completely filtering the javascript and other code from the actual word content on the site. Is there a better way to filter between the code content on a page and the actual word content?
if(isset($_POST['url'])){
$url = $_POST['url'];
$str = strip_tags(file_get_contents($url));
$words = str_word_count(strtolower($str),1);
$word_count = array_count_values($words);
foreach ($word_count as $key=>$val) {
$density = ($val/count($words))*100;
echo "$key - COUNT: $val, DENSITY: ".number_format($density,2)."%<br/>\n";
}
}
解决方案
I have written 2 functions for this:
/**
* Removes all Tags provided from an Html string
*
* @param string $str The Html String
* @param string[] $tagArr An Array with all Tag Names to be removed
*
* @return string The Html String without the tags
*/
function removeTags($str, $tagArr)
{
foreach ($tagArr as $tag) {
$str = preg_replace('#<' . $tag . '(.*?)>(.*?)</' . $tag . '>#is', '', $str);
}
return $str;
}
/**
* cleans some html string
*
* @param string $str some html string
*
* @return string the cleaned string
*/
function filterHtml($str)
{
//Remove Tags
$str = removeTags($str, ['script', 'style']);
//Remove all Tags, but not the Content
$str = preg_replace('/<[^>]*>/', ' ', $str);
//Remove Linebreaks and Tabs
$str = str_replace(["\n", "\t", "\r"], ' ', $str);
//Remove Double Whitespace
while (strpos($str, ' ') !== false) {
$str = str_replace(' ', ' ', $str);
}
//Return trimmed
return trim($str);
}
Working Example
$fileContent = file_get_contents('http://stackoverflow.com/questions/25537377/filtering-html-from-site-content-php');
$filteredContent = filterHtml($fileContent);
var_dump($filteredContent);
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