This is my `$var` from `json_encode`:

```
{
"key1":"\u0000data1",
"key2":"\u0000data2",
"key3":"\u0000data3",
"key4":"\u0000data4
}

```

I would like to do this:

```
echo json_encode(str_replace ("\\u0000", "",  $var));

```

in order to get rid of the preceding `\u0000` that's showing up, the line above doesn't work to strip it.