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关于邮箱验证的有关问题,请高手帮忙看一下

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Release: 2016-06-13 13:25:26
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关于邮箱验证的问题,请高手帮忙看一下
if (!ereg("^[a-zA-Z0-9_.]+@([a-zA-Z0-9_]+.)+[a-zA-Z]{2,3}$", $email)){



帮看看这个有问题吗?能验证所有规则的邮箱吗?
gsgsg@xx.com
gsdg.ee@xx.com.cn
tert_erw@xx.com

另外邮箱中一般都是下划线“_”,但今天有人提出也有“-”这种划线的邮箱,请问以上代码如何修改可以让带有“-”这种划线的邮箱也通过?
rgter-fsf@xx.com

------解决方案--------------------
if (!ereg("^[a-zA-Z0-9_.-]+@([a-zA-Z0-9_]+.)+[a-zA-Z]{2,3}$", $email)){

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