PHP Regex：在電子郵件地址中檢測多個句點，下划線等

Question

我有一個正則表達式，可以將GREAT與email@example.com之類的電子郵件匹配，但不能與email.this.one@example.com之類的電子郵件匹配。 奇怪的是，像this.1.b@yahoo.com這樣的東西可以正常工作。 我已經使用regex101.com測試我的表達式，它們應該匹配，但是當我實際上在WAMP服務器上運行它時卻不匹配！

/\s(((\w)+\.)?)+((\w)+)@/

有人可以告訴我我所缺少的嗎？？？ 我的意思是，我故意在表達式的其余部分之前將其與SPACE匹配，因為最近我讀到一個電子郵件地址實際上可以包含任何鍵盤字符，但不能超過一個連續的時間段-當然，我知道它僅檢測字母數字字符在@符號之前現在匹配的其他句點之前，但這不是重點。

Answer 1

您將需要做很多工作來驗證可能存在的任何電子郵件。

更好的選擇是通過發送電子郵件並進行確認來實際驗證電子郵件。 驗證就足夠了，該電子郵件包含一個@符號。

您想使用正則表達式而不丟失任何可能輸入的電子郵件嗎？ 這是完全符合RFC-822的正則表達式 ：

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