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php正则表达式 示意点号

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Release： 2016-06-13 12:36:33
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php正则表达式 表示点号
'/\.'和'/\.?'和‘/\/’表示同个意思？
用到下面的代码里
$pattern = '/ajax/ppp/shit.html';
$pattern = addcslashes($pattern, "/\.?");
?
结果都是$pattern的值都是'\/ajax\/ppp\/shit\.html'

Related labels：
addcslashes html nbsp pattern
source：php.cn
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