$string="start
This is a test
end";（两个
中间的内容是不确定的）,我想用ereg_replace将两个
中间的内容替换成另外的内容，应该怎么写呢？我这样写:ereg_replace("^
*+
$","OK",$string);结果不对。
---------------------------------------------------------------
ereg_replace("
.+
","OK",$string);
---------------------------------------------------------------
1
2$string="start
3<!--n-->
4This is a test
5<!--n-->
6end";
7echo htmlspecialchars($string).'
<br/>
1';
2$str=ereg_replace("
3<!--\\-\\-n\\-\\--->
4.+
5<!--\\-\\-n\\-\\--->
6","
7<!--n-->
8OK
9<!--n-->
10",$string);
11echo htmlspecialchars($str);
---------------------------------------------------------------
$string = "start
This is a test
end";
$string = preg_replace("/(
)(.*)(\\1)/", "
ok
", $string);
echo $string;