如何使用正则表达式检查逗号分隔的电子邮件地址

你可以试试这个

foreach(explode(',', $sEmailAddresses) AS $sEmailAddress) {
$bValid |= filter_var($sEmailAddress, FILTER_VALIDATE_EMAIL);
 }

 $sResult = ($bValid) ? 'Both are valid' : 'One of them are not';