MS Sql Connection using PHP in Linux

I am tring to access MS Sql Server from linux os,

I am successfuly connect MS Sql Server,

I alredy set DSN by configure files "odbcinst.ini" and "odbc.ini"

in "odbcinst.ini" file

[FreeTDS]

Description = Freetds v 0.95

Driver=/usr/lib/x86_64-linux-gnu/odbc/libtdsodbc.so

in "odbc.ini"

[MSSQLServer]

Driver = FreeTDS

Trace = No

Server = IP Address

Port = 1433

Database = Data Base Name

User = login

Password = password

on command prompt of linux I can connect MS SQl Server and fetch data succesfuly.

but when I try connect in php,

I tried both way to connect MS Sql Server

1> $conn = sqlsrv_connect( $serverName, $connectionOptions )

2> $conn = odbc_connect($dsn,$user,$password);

both time nothing get (error or message).