單項選擇題

變量$email的值是字符串user@example.com,以下哪項能把字符串轉(zhuǎn)化成example.com?()

A.substr($email,strpos($email,"@"));
B.strstr($email,"@");
C.strchr($email,"@");
D.substr($email,strpos($email,"@")+1);
E.strrpos($email,"@");

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