php根据域名验证电子邮件地址 [英] php validate email address based on the domain name

问题描述

我需要根据域名过滤一些电子邮件地址：
基本上，如果域名是yahoo-inc.com，facebook.com，baboo.com ..（以及其他一些），该功能应该做一些事情，如果域名不同，它应该做其他事情。
我知道这样做的唯一方法是使用带有preg_match_all的模式/正则表达式，并为每个balcklisted域创建案例/条件（例如，如果domain = yahoo-inc）执行此elseif（domain == facebook.com）这样做......等我需要知道是否有更简单/更简洁的方法来包含我想要在单个变量/数组中过滤的所有域，然后只应用2个条件（例如，如果电子邮件是黑名单{do something} else {做其他事情}

I need to filter some email address based on the domain name : Basically if the domain name is yahoo-inc.com, facebook.com, baboo.com .. (and a few others) the function should do something and if the domain is different it should do something else . The only way I know to do this is to use a pattern/regex with preg_match_all and create cases/conditions for each balcklisted domain (e.g if domain = yahoo-inc) do this elseif (domain == facebook.com ) do this ... etc but I need to know if there is a more simple/concis way to include all the domains that I want to filter in a single variable/array and then apply only 2 conditions (e.g if email is in black list {do something } else {do something else}

推荐答案

提取域名部分（即最后一个'@'后的所有内容），关闭它，然后使用 in_array 检查它是否在你的黑名单中：

Extract the domain portion (i.e. everything after the last '@'), down case it, and then use in_array to check whether it's in your blacklist:

$blacklist = array('yahoo-inc.com', 'facebook.com', ...);
if (in_array($domain, $blacklist)) {
    // bad domain
} else {
    // good domain
}

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