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htmlpurifier/library/HTMLPurifier/AttrTransform/Border.php

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<?php
require_once 'HTMLPurifier/AttrTransform.php';
/**
* Pre-transform that changes deprecated border attribute to CSS.
*/
class HTMLPurifier_AttrTransform_Border
extends HTMLPurifier_AttrTransform {
function transform($attr, $config, &$context) {
if (!isset($attr['border'])) return $attr;
$border_width = $attr['border'];
unset($attr['border']);
// some validation should happen here
$attr['style'] = isset($attr['style']) ? $attr['style'] : '';
$attr['style'] = "border:{$border_width}px solid;" . $attr['style'];
return $attr;
}
}
?>