exec() in php

[lampbally]

I tried to execute the following line in php.

exec( "smbclient -L server-name -Uusername%Password@2 -Wagi | grep -v '\$'", $output1, $return1);

 

where username is my domain username

          Password@2 is my domain password

          server-name is the name of the server.

 

1) when i run this on apache, my domain password got locked. Is that because of '@' present in my password?

(or)

does php accept '%' along with the exec  command?

2) i want the output to be listed

 

can anyone help me with this.