返回和换行符

Question

我目前使用的破坏正则表达式的结果：

preg_match("/(.*)On\s+(Sun|Sat|Fri|Thu|Wed|Tue|Mon),\s+(January|February|March|April|May|June|July|August|September|October|November|December)\s+\d?\d,\s+\d{4}\s+at\s+\d?\d:\d\d\s+[AP]M,/i", $to, $end); 

它的伟大工程：

$string = "I need to match this. On Sun, May 27, 2012 at 9:23 AM, Prov"; 

但不适合：

$string = "I need to match this. 

On Sun, May 27, 2012 at 9:23 AM, Prov"; 

在$字符串2的收益不允许比赛。我可以在我的preg_match中更改某些内容，以便返回不会中断我的结果吗？

Answer 1

添加/s修改，以允许点（.）也匹配换行符： ''

preg_match("/(.*)On\s+(Sun|Sat|Fri|Thu|Wed|Tue|Mon),\s+(January|February|March|April|May|June|July|August|September|October|November|December)\s+\d?\d,\s+\d{4}\s+at\s+\d?\d:\d\d\s+[AP]M,/si", $to, $end); 

Answer 2

的点字符does not match换行符。