json_encode在php中的数组

Question

I have a problem with json encode of an array of variables $name0 and $name1 If I use a simple echo $name0 and echo $name, I get the correct result for both variables. But if I put $name0 and $name1 in an array $arr and then encode the array with echo json_encode($arr), in my browser I get the value of $name0. But the value of $name1 is "null". How can I get both values right ($name0 and $name1)? Thank you for your help. I am really stuck.

PHP

$sql= "SELECT * FROM  names WHERE userId= '$userId'  AND  number = 0";
    $rs =mysql_query($sql, $connexionLogin) or die(mysql_error());
    $row_rs = mysql_fetch_assoc($rs);
    $total_rs = mysql_num_rows($rs);
    $totalName0 = $total_rs;
    if ($total_rs>0) {
        $name0 = $row_rs['name'];
    }else  if ($total_rs==0) {
        $name0 = "empty";
    }
    echo $name0 //returns "This is the first name"
    $sql= "SELECT * FROM  names WHERE userId = '$userId'  AND number= 1";
    $rs =mysql_query($sql, $connexionLogin) or die(mysql_error());
    $row_rs = mysql_fetch_assoc($rs);
    $total_rs = mysql_num_rows($rs);
    $totalName1 = $total_rs;
    if ($total_rs!=0) {
        $name1 = $row_rs['nom'];
    }else  if ($total_rs==0) {
        $name1 = "empty";
    }
   echo $name1; // returns "This is the second name"


    $arr = array(
        'name0' => $name0,
        'name1' => $name1
    );
    echo json_encode($arr); //returns 

This is the first nameThis is the second name{"name0":"This is the first name","name1":null}