XML5个转义符:<，>，&，”，©;的转义字符分别如下： &lt; &gt;&amp; &quot; &apos;

XML5个转义符:<，>，&，”，©;的转义字符分别如下： < >& " '

            $search = array("<", ">", "&", '"', '©');

            $replace = array("&lt;", "&gt;", "&amp;", "&quot;", "&apos;");

            $v_replace = str_replace($search, $replace, $v);