php要想匹配
.....
<add name="RoomFriendContext" providerName="System.Data.SqlClient" connectionString="Data Source=192.168.1.11;Initial Catalog=Raa;Persist Security Info=True;User ID=sa;Password=wwwww;MAX Pool Size=2000;Min Pool Size=3;Connection Lifetime=30;Pooling=true;charset=utf8;"/>
.....此处省略诺干相同格式的行。这一行里面关键字是providerName="System.Data.SqlClient" ,然后去除掉charset=utf8;这段,正则怎么搞的?
想得到的最后结果是
<add name="RoomFriendContext" providerName="System.Data.SqlClient" connectionString="Data Source=192.168.1.11;Initial Catalog=Raa;Persist Security Info=True;User ID=sa;Password=wwwww;MAX Pool Size=2000;Min Pool Size=3;Connection Lifetime=30;Pooling=true;"/>
.....
<add name="RoomFriendContext" providerName="System.Data.SqlClient" connectionString="Data Source=192.168.1.11;Initial Catalog=Raa;Persist Security Info=True;User ID=sa;Password=wwwww;MAX Pool Size=2000;Min Pool Size=3;Connection Lifetime=30;Pooling=true;charset=utf8;"/>
.....此处省略诺干相同格式的行。这一行里面关键字是providerName="System.Data.SqlClient" ,然后去除掉charset=utf8;这段,正则怎么搞的?
想得到的最后结果是
<add name="RoomFriendContext" providerName="System.Data.SqlClient" connectionString="Data Source=192.168.1.11;Initial Catalog=Raa;Persist Security Info=True;User ID=sa;Password=wwwww;MAX Pool Size=2000;Min Pool Size=3;Connection Lifetime=30;Pooling=true;"/>
<add name="RoomFriendContext" providerName="System.Data.SqlClient" connectionString="Data Source=192.168.1.11;Initial Catalog=Raa;Persist Security Info=True;User ID=sa;Password=wwwww;MAX Pool Size=2000;Min Pool Size=3;Connection Lifetime=30;Pooling=true;charset=utf8;"/>
<add name="RoomFriendContext" providerName="aaaaa" connectionString="Data Source=192.168.1.11;Initial Catalog=Raa;Persist Security Info=True;User ID=sa;Password=wwwww;MAX Pool Size=2000;Min Pool Size=3;Connection Lifetime=30;Pooling=true;charset=utf8;"/>
html;
echo preg_replace('/(<add[^>]*providerName="System\.Data\.SqlClient"[^>]*)charset=utf8;([^>]*>)/is','$1$2',$s);