Codeigniter 4 not working with sqlsrv

Hey guys, I'm trying to connect codeigniter 4 with sqlsrv driver, but it's not working. I'm using wamp server 64. I did all needed configurations.
a) I downloaded drivers for 7.4 php version and
added the "extension=" lines in php.ini file for these two files (php_pdo_sqlsrv_74_ts_x64.dll, php_sqlsrv_74_ts_x64.dll).
b) I checked the php_info and its everything ok.
c) I did a test using the code below and it worked, but when I use the same setting in codeigniter 4, it doesn't work.

PHP Code:

$serverName = "DSSQLM01"; //serverName\instanceName, portNumber (default is 1433)
$connectionInfo = array( "Database"=>"DW", "UID"=>"SA", "PWD"=>"v8d2Sa5Y&cq%","Encrypt"=>false,"TrustServerCertificate"=>false);
$conn = sqlsrv_connect( $serverName, $connectionInfo);

if( $conn ) {
    echo "Connection established.<br />";
}else{
echo "<pre>";
    echo "Connection could not be established.<br />";
    die( print_r( sqlsrv_errors(), true));
echo "</pre>";
}

$tsql = "SELECT * FROM DW WHERE dt_ultima_atualizacao IS NOT NULL";

if(($result = sqlsrv_query($conn,$tsql)) !== false){
    while( $obj = sqlsrv_fetch_object( $result )) {
          echo $obj->nome.'<br />';
    }
} 


## setting in codeigniter 4

PHP Code:

public $dw = [
 'DSN'      => '',
'hostname' => 'DSSQLM01'dfasdf,
 'username' => 'SA',
 'password' => 'v8d2Sa5Y&cq%',
 'database' => 'DW',
 'DBDriver' => 'sqlsrv',
 'DBPrefix' => '',
 'pConnect' => false,
 'DBDebug'  => (ENVIRONMENT !== 'production'),
 'charset'  => 'utf8',
 'DBCollat' => 'utf8_general_ci',
 'swapPre'  => '',
 'encrypt'  => false,
 'compress' => false,
 'strictOn' => false,
 'failover' => [],
 'port'    => 1433,
 ]; 


## Configurações ##

I want to ask you to test the following.
In the system/Database/SQLSRV/Connection.php file, add a backslash to the beginning of all functions starting with sqlsrv_.
Like this sqlsrv_configure => \sqlsrv_configure
And then try to connect to the database.