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<?php
/**
* Tell whether a value return by HTML_CSS is an error.
* Solution to use HTML_CSS::isError() method.
*
* PHP versions 4 and 5
*
* @category HTML
* @package HTML_CSS
* @subpackage Examples
* @author Laurent Laville <pear@laurent-laville.org>
* @copyright 2005-2009 Laurent Laville
* @license http://www.opensource.org/licenses/bsd-license.php BSD
* @version CVS: $Id: CSS_parseData.php,v 1.8 2009/01/19 23:22:39 farell Exp $
* @link http://pear.php.net/package/HTML_CSS
* @since File available since Release 1.0.0RC2
* @ignore
*/
require_once 'HTML/CSS.php';
/**
* Replace default internal error handler.
*
* Always print rather than dies if the error is an exception.
*
* @param int $code a numeric error code.
* Valid are HTML_CSS_ERROR_* constants
* @param string $level error level ('exception', 'error', 'warning', ...)
*
* @return integer
* @ignore
*/
function myErrorHandler($code, $level)
{
return PEAR_ERROR_PRINT; // always print all error messages
}
/*
body { font-size: 1em; }
---- print.css ----
*{
margin: 4px; padding: 0px;
}
body{
font-family: Tahoma, Verdana, Helvetica, Arial, sans-serif;
text-align:center;
background-color:#fff;
}
---- default.css ----
*{
margin: 0px; padding: 0px;
}
body{
font-family: Lucida Grande, Tahoma, Verdana, Arial, sans-serif;
text-align:center;
background-color:#fff;
}
*/
$styles = array(
"body { font-size: 1em; }",
"print.css",
"default.css"
);
$prefs = array(
'push_callback' => 'myErrorHandler',
);
$attribs = null;
$css = new HTML_CSS($attribs, $prefs);
$res = $css->parseData($styles);
if ($css->isError($res)) {
$line = __LINE__ - 1;
$style = 'background-color:red; color:yellow; font-weight:bold; padding:0.4em;';
echo '<p style="'.$style.'">Error message detected by isError() at line ' .
$line . '</p>';
}
print 'Still alive !';
?>
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