为何不能对正则匹配的值进行大写转换呢

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Release: 2016-06-13 11:13:10
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为什么不能对正则匹配的值进行大写转换呢?

	function syntax_color_sql($string)<br />	{<br />		$pattern='#select|left join|having|union|from|right join|limit|where|order by|for lock#sUi';<br />		return preg_replace($pattern, '<font color="#ffcc00">'.strtoupper('$0').'</font>', $string);<br />	}
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------解决方案--------------------
本帖最后由 xuzuning 于 2013-01-25 12:38:54 编辑     $pattern='#select
------解决方案--------------------
left join
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having
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union
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from
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right join
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limit
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where
------解决方案--------------------
order by
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for lock#sUie';
    return preg_replace($pattern, '"".strtoupper("$0").""', $string);
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