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网上一段简单的preg_match替换 不明
<br> $string = "Is is the cost of of gasoline going up up"; <br> $pattern = "/([a-z]+) \1/i"; <br> if(preg_match($pattern, $string,$arr)){<br> print_r($arr);<br> echo preg_replace($pattern, '$1', $string);<br> }<br>
<br> Array<br> (<br> [0] => Is is<br> [1] => Is<br> )<br> Is the cost of gasoline going up<br>
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