Problem to connect with oracle using php 7.1?

Question

I’m having a problem making a connection to Oracle in PHP 7 appears the error message below:

ERROR: could not find driverERROR: could not find driver 
  Notice: Undefined variable: conAD in C:\laragon\www\systemag\area_restritaAG.php on line 59

Fatal error: Uncaught Error: Call to a member function query() on null
 in C:\laragon\www\systemag\area_restritaAG.php:59 Stack trace: 
    #0 {main} thrown in C:\laragon\www\systemag\area_restritaAG.php on line 59

Follow the codes I tried to make below:

try {
    $conAG = new PDO('oci:dbname=//localhost:1521/xe/ORCL', 'core_11_1', 'T3cn1c05p');
    $conAG->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch(PDOException $e) {
    echo 'ERROR: ' . $e->getMessage();
}

try {
    $conAD = new PDO('oci:dbname=//localhost:1521/xe/ORCL', 'wms_eadi', 'wms_eadi');
    $conAD->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch(PDOException $e) {
    echo 'ERROR: ' . $e->getMessage();
}

//$db_connectAG = '(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.20.220.43)(PORT=1521)) (CONNECT_DATA=(SID=alcisagprd)))';
//$db_userAG = 'core_11_1';
//$db_passAG = 'T3cn1c05p';
//$db = "oci:dbname=alcisagprd";
//$conAG = oci_connect($db_user,$db_pass,$db_connectAG,'AL32UTF8');


//$conAG = new PDO("oci:dbname=".$db_connectAG,$db_userAG,$db_passAG);

//$db_connectAD = '(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.20.220.32)(PORT=1522)) (CONNECT_DATA=(SID=ALCISSTB)))';
//$db_userAD = 'wms_eadi';
//$db_passAD = 'wms_eadi';
//$conAD = oci_pconnect($db_userAD,$db_passAD,$db_connectAD,'AL32UTF8'); 
//$conAD = oci_connect("wms_eadi","wms_eadi","ALCIS_NEW"); conexão alternativa 
//$conAG = oci_connect('core_11_1', 'T3cn1c05p', 'ALCISAGPRD','AL32UTF8');


//$AD = oci_parse($conAD,"select k.suchbegriff from KLIENTEN k where (k.suchbegriff = '".$cnpj."' or k.suchbegriff = '".$tb_cnpj."')");
//oci_execute($AD);
//$lineAD = oci_fetch_all($AD, $res);

$AD = $conAD->query("select k.suchbegriff from KLIENTEN k where (k.suchbegriff = '".$cnpj."' or k.suchbegriff = '".$tb_cnpj."')");
$AD->execute();
$lineAD = $AD->rowCount();

$AG = $conAG->query("select k.suchbegriff from KLIENTEN k where (k.suchbegriff = '".$cnpj."' or k.suchbegriff = '".$tb_cnpj."')");
$AG->execute();
$lineAG = $AD->rowCount();

//$AG = oci_parse($conAG,"select k.suchbegriff from KLIENTEN k where (k.suchbegriff = '".$cnpj."' or k.suchbegriff = '".$tb_cnpj."')");
//oci_execute($AG);
//$lineAG = oci_fetch_all($AG, $res);

if($lineAD > 0 && $lineAG > 0){
    header("Location: clientes/indexFull.php");
}else if($lineAD > 0 && $lineAG == 0){
    header("Location: clientes/index.php");
}else if($lineAG > 0 && $lineAD == 0){
    header("Location: clienteAG/indexAG.php");
}else{
    echo "<script>
            alert('CNPJ NÃO SE ENCONTRADO NA BASE DADOS\\nFAVOR ENTRAR EM CONTATO COM ATENDIMENTO');
            location.href='formulario_cadastroTeste.php';
            </script>";
}

I’m using the Laragon and have already enabled the extensions oci8_12c, oci8_11g and idle these last two I downloaded in the of this link

I already checked the php.ini and lines with such extensions are uncommented.

I’ve already left the Laragon with the services I’ve restarted the server, still can’t make the connection anyone can help me?