#scripting

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$jsonString = "ok;";

$jsonString .= "[";

while ($dados = $sql1->fetch_array()) {
    $jsonString .= "{";
    
    $jsonString .= "\"id\":\"";
    $jsonString .= $dados['id'];
    $jsonString .= "\",";
    
    $jsonString .= "\"cpf\":\"";
    $jsonString .= $dados['cpf'];
    $jsonString .= "\",";
    
    $jsonString .= "\"nome\":\"";
    $jsonString .= $dados['nome'];
    $jsonString .= "\",";
    
    $jsonString .= "\"tipo\":\"";
    $jsonString .= $dados['tipo'];
    $jsonString .= "\"";
    
    $jsonString .= "},";
}

$jsonString = rtrim($jsonString, ',');

$jsonString .= "]";

echo $jsonString;

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public static function newVariable($key,$value){

    if (self::$variables==null){
        self::$variables=array();
    }

    self::$variables[$key]=$value;
}

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if (isset($_POST['doc-login'])){
    $user_name =$_POST['username'];
    $password=$_POST['password'];

    $query="SELECT * FROM doc_logindb WHERE username='$user_name' AND password='$password'";
    $result=mysqli_query($con,$query);
    if (mysqli_num_rows($result)==1){

        $_SESSION['username']=$user_name;
        header("Location:docsPanel.php");
    }else{
        header("Location:error.php");
    }
}