<?php
$str='<span style="text-decoration-line: underline; font-weight: bold; font-style: italic;">White</span>
<span style="text-decoration-line: underline;">RED</span><span style="color:blue">blue</span>';
function next_format($str)
{
$array=array("text-decoration-line"=>"underline","font-weight"=>"bold","font-style"=>"italic");
foreach ($array as $key=>$val)
{
if($str[1]==$key && $str[2]==$val)
{
return $str[1].': '.$str[2].";";
}
}
return '';
}
function next_span($matches)
{
$needFormat=preg_replace_callback('/([a-z\-]+):\s*([^;]+)(;|)/ism',"next_format",$matches[2]);
return $matches[1].$needFormat.$matches[3];
}
echo preg_replace_callback(
"/(\<span\s+style\=\")([^\"]+)(\">)/ism",
"next_span",
$str);
?>
