note 91498 modified in function.strip-tags by danbrown
| From: | danbrown@php.net | Date: | Wed, 09 Sep 2009 14:15:40 +0000 |
| Subject: | note 91498 modified in function.strip-tags by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-160353@lists.php.net to get a copy of this message | ||
Wanted a function to do what nick's was supposed to do: "strip tags and attributes, but
with allowable attributes." but I couldn't get his to work properly, I think it had
something to do with greedy / non greedy searching. Anyway, I modified his a bit:
<?php
function strip_tags_attributes($string,$allowtags=NULL,$allowattributes=NULL){
$string = strip_tags($string,$allowtags);
if (!is_null($allowattributes)) {
if(!is_array($allowattributes))
$allowattributes = explode(",",$allowattributes);
if(is_array($allowattributes))
$allowattributes = implode(")(?<!",$allowattributes);
if (strlen($allowattributes) > 0)
$allowattributes = "(?<!".$allowattributes.")";
$string = preg_replace_callback("/<[^>]*>/i",create_function(
'$matches',
'return preg_replace("/ [^
=]*'.$allowattributes.'=(\"[^\"]*\"|\'[^\']*\')/i",
"", $matches[0]);'
),$string);
}
return $string;
}
?>
[EDIT BY danbrown AT php DOT net: Original function by (nick AT optixsolutions DOT co DOT uk) on
31-MAR-09 with the following note:]
Function to strip tags and attributes, but with allowable attributes.
Usage:
Allowable attributes can be comma seperated or array
Example:
<?php
strip_tags_attributes($string,'<strong><em><a>','href,rel');
?>
--was--
Wanted a function to do what nick's was supposed to do: "strip tags and attributes, but
with allowable attributes." but I couldn't get his to work properly, I think it had
something to do with greedy / non greedy searching. Anyway, I modified his a bit:
<?php
function strip_tags_attributes($string,$allowtags=NULL,$allowattributes=NULL){
$string = strip_tags($string,$allowtags);
if (!is_null($allowattributes)) {
if(!is_array($allowattributes))
$allowattributes = explode(",",$allowattributes);
if(is_array($allowattributes))
$allowattributes = implode(")(?<!",$allowattributes);
if (strlen($allowattributes) > 0)
$allowattributes = "(?<!".$allowattributes.")";
$string = preg_replace_callback("/<[^>]*>/i",create_function(
'$matches',
'return preg_replace("/ [^
=]*'.$allowattributes.'=(\"[^\"]*\"|\'[^\']*\')/i",
"", $matches[0]);'
),$string);
}
return $string;
}
?>
http://php.net/manual/en/function.strip-tags.php