<?php $css = "p {border-radius: 5px;transform: rotate(90deg);}"; print preg_replace('~([;{])((?:linear-gradient|transition|transform|animation|border-radius|box-shadow)[^:]*):([^;}]+)(?=[;}])~s', '\1-webkit-\2:\3;-moz-\2:\3;-o-\2:\3;-html-\2:\3', $css);
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