<?php
...
$db2conn = db2_connect($database,$login,$password) ;
...
$serv = 'adm007';
$result = db2_exec($db2conn,"call main.ret_services('$serv')", array ('cursor'=>DB2_SCROLLABLE))
        or  exit (db2_stmt_errormsg());
...
?>

<?php
...
$db2conn = db2_connect($database,$login,$password) ;
...
$serv = 'adm007';
$result = db2_exec($db2conn,"call main.ret_services(:serv)", array ('cursor'=>DB2_SCROLLABLE))
        or  exit (db2_stmt_errormsg());
...
?>

<?php
$database='iport';
$login='db2inst';
$password='password';
$db2conn = db2_connect($database,$login,$password) ;
 if  (!$db2conn)
{        print  db2_conn_errormsg();
         exit ();
}

$serv = 'adm007';
$sql = "select * from main.work1 where vc_logon = ?";
$stmt = db2_prepare($db2conn,$sql) ;
db2_bind_param($stmt, 1 ,"serv",DB2_PARM_IN) ;

 if  (db2_execute($stmt))
   {
     while  ($row=db2_fetch_array($stmt))
        {
         print  "{$row[0]} \n";
        }
    }
 else 
    {
     echo  'error';
     echo  db2_stmt_errormsg();
    }
?>