From: soho@localhost
To: june3@163.com
Subject: google
/(From:.{1,})(To:.{1,})(Subject:.{1,})/gmi
这个表达式单行可配置,设置了m参数不能进行多行匹配
From: soho@localhost
To: june3@163.com
Subject: google
/(From:.{1,})(To:.{1,})(Subject:.{1,})/gmi
这个表达式单行可配置,设置了m参数不能进行多行匹配
这样写就行了
/(From:.{1,})\s*(To:.{1,})\s*(Subject:.{1,})/gmi