我对Php Regex很新，但不知怎么地学习了一下并尝试如下，但得到的错误为：https://ideone.com/fTIyUK
以下是输出的整个代码： <?php
$email = "paulw Paul Walker paulw 2014-12-28 07:18:09 paul@comp.com 2014-12-28 07:18:09 2014-12-28 07:18:09"; // Invalid email address
$regex = "/[a-z] [A_Z] [A-Z] [A-Z] (\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2}) /[-0-9a-zA-Z.+_]+@[-0-9a-zA-Z.+_]+\.[a-zA-Z]{2,4} (\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2}) (\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2})/";
if ( preg_match( $regex, $email ) ) {
echo $email . " is a valid email. We can accept it.";
} else {
echo $email . " is an invalid email. Please try again.";
}
?>
上述链接中的相同代码：
userid (string)
first name(string)
last name(string)
userid(string)
date
email
date
date
请告诉我需要改变什么？
更新
输入： string（az）string（a-zA-Z）string（a-zA-Z）string（az）date（yyyy-mm-dd hh：mm：ss）emailid日期（yyyy-mm-dd hh：mm：ss）日期（yyyy-mm-dd hh：mm：ss）
8参数：
{{1}}
答案 0 :(得分：1)
/如果你仔细看到这个正则表达式，你在正则表达式中间有一个未转义的/，但是你使用$regex = "~[a-z]+ [A-Z]+ [A-Z]+ [A-Z]+ (\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2}) [-\w.+]+@[-\w.+]+\.[a-zA-Z]{2,4} (\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2}) (\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2})~i";
作为正则表达式分隔符。
使用此正则表达式替代替代正则表达式分隔符：
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