Warning: sqlsrv_query() expects Parameter 1 to be Resource, Object Given

Question

I’m having trouble in a Cód. which has the function of returning a keyword search of a bank record.

Error: Warning: sqlsrv_query() expects Parameter 1 to be Resource, Object Given

I tested in Mysql database, and had no problem, but the database I need to use is sqlserver.

PS: The connection to the bank is working properly. Code. connection to the bank:

<?php

// Conexão com banco SqlServer

$servidor = "localhost"; //host
$connectionInfo = array("Database"=>"dcm_digital", "UID"=>"root", "PWD"=>"root", "CharacterSet"=>"UTF-8");

//Criar conexão 
$conn = sqlsrv_connect($servidor, $connectionInfo);

if($conn){ echo("*** Banco conectado ***<br>"); } else { echo("Conexão falhou.<br>"); die( print_r( sqlsrv_errors(), true));}

Follow the Cód. below:

<?php

// Include conexão com o bd.
include 'conexaoBD/conexao.php';

$btn     = $_POST['btn'];
$p_chave = $_POST['palavra'];

if(isset($btn)){
    $busca = $p_chave;

    if($busca == null or $busca == " "){

        echo '<center><b>Digite a palavra-chave para pesquisar!</b></center>';

    } else {

        $busca_div = explode(' ',$busca);
        $quant     = count($busca_div);
        $exibe_id  = array("");

        for($i=0; $i<$quant; $i++){

            $pesquisa = $busca_div[$i]; 

            //Banco SqlServer
            $_sql = "SELECT * FROM conteudo_dcm WHERE DCM_conteudo LIKE '%$pesquisa%';";
            $sql  = sqlsrv_query($conn,$_sql);
            $quant_cmps = sqlsrv_num_rows($sql);


            /*/Banco SqlServer
            $_sql = "SELECT * FROM test.conteudo_dcm WHERE DCM_conteudo LIKE '%$pesquisa%';";
            $sql  = mysqli_query($conn, $_sql);
            $quant_cmps = mysqli_num_rows($sql);*/

            if($quant_cmps == 0){

                echo '<center><b>Nenhum resultado obtido!</b></center>';

            } else {
                //while ($linha = mysqli_fetch_array($sql)){
                while ($linha = sqlsrv_fetch_array($sql)){
                    $id       = $linha['DCM_id'];
                    $nome     = $linha['DCM_nome'];
                    $conteudo = $linha['DCM_conteudo'];

                    if(!array_search($id, $exibe_id)){
                        echo /*'<a href="<?php $_href; ?>">'.*/$nome/*.'</a>'*/."<br><br>".
                             substr($conteudo, 0, 600)."<b> ...</b>".
                             "<br>---------------------<br>";   

                        array_push($exibe_id,$id);
                    }
                }
            }
        }
    }
}
?>