<?php $content="aaa <!--[if (gt IE 9)|!(IE)]><!--> <html lang=\"en\"> <!--<![endif]--> bbb"; $tagOpen="<!--[if (gt IE 9)|!(IE)]><!-->"; $tagClose="<!--<![endif]-->"; $condition='/'.preg_quote($tagOpen).'.*?'.preg_quote($tagClose).'/i'; $content=preg_replace($condition, '$1', $content); echo htmlentities($content);
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