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  • php 检查电子邮件函数

    function is_valid_email_address($email){
            $qtext = '[^//x0d//x22//x5c//x80-//xff]';
            $dtext = '[^//x0d//x5b-//x5d//x80-//xff]';
            $atom = '[^//x00-//x20//x22//x28//x29//x2c//x2e//x3a-//x3c'.
                '//x3e//x40//x5b-//x5d//x7f-//xff]+';
            $quoted_pair = '//x5c[//x00-//x7f]';
            $domain_literal = "//x5b($dtext|$quoted_pair)*//x5d";
            $quoted_string = "//x22($qtext|$quoted_pair)*//x22";
            $domain_ref = $atom;
            $sub_domain = "($domain_ref|$domain_literal)";
            $word = "($atom|$quoted_string)";
            $domain = "$sub_domain(//x2e$sub_domain)*";
            $local_part = "$word(//x2e$word)*";
            $addr_spec = "$local_part//x40$domain";
            return preg_match("!^$addr_spec$!", $email) ? 1 : 0;
    }

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  • 原文地址:https://www.cnblogs.com/sanpoye/p/2659652.html
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