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Request #71286 strip_tags should remove non-text chararcters as well
Submitted: 2016-01-05 15:42 UTC Modified: 2016-01-05 16:26 UTC
From: leesleefeng at 163 dot com Assigned:
Status: Not a bug Package: Strings related
PHP Version: 5.6.16 OS: All
Private report: No CVE-ID: None
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From: leesleefeng at 163 dot com
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 [2016-01-05 15:42 UTC] leesleefeng at 163 dot com 
Description:
------------
strip_tags should remove non-text chararcters as well.

When using strip_tags to remove html and php tags, the purpose is to get plain text. Thus if the tags has codes but not text inside, like style tag and script tag, the codes should be removed as well, not noly the tags.




Test script:
---------------
$s = <<<html
<style type="text/css">
    body,h1,h2,h3,h4,h5,h6{padding:0;margin:0;}
</style>
<script>
window.onload = function(){
    console.log('document is ready');
}
</script>
<div>
walking through the green fields, 
sunshine in my eyes
</div>
html;

$text = strip_tags($s);
echo $text;


Expected result:
----------------
walking through the green fields, 
sunshine in my eyes

Actual result:
--------------
    body,h1,h2,h3,h4,h5,h6{padding:0;margin:0;}
window.onload = function(){
    console.log('document is ready');
}
walking through the green fields, 
sunshine in my eyes

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 [2016-01-05 16:26 UTC] tyrael@php.net
-Status: Open +Status: Not a bug
 [2016-01-05 16:26 UTC] tyrael@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

by that same logic any well-formed html or xml string should result in an empty string.
strip_tags() doesn't work like that, and you can see that from the second example of the official documentation: http://php.net/strip_tags#example-5473
 
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