Php variable for javascript

Question

I am using Highchart to create charts, however I am not able to pass the value of data through a php variable:

series: [{
      name: 'Tendência',
      data: <?php echo $encodeValorTendencia; ?>
   },{
      name: 'Obtenção',
      data: <?php echo $encodeValorObtencao; ?>
}],

I’m already "bumping" the variables:

$valorTendencia[] = $value->Valor;
$encodeValorTendencia = json_encode($valorTendencia);

$valorObtencao[] = $value->ValorObtencao;
$encodeValorObtencao = json_encode($valorObtencao);

$dataHora[] = $value->DataHoraPrevisao;
$encodeDataHora = json_encode($dataHora);

The value of the variable $dataHora works, through this stretch:

xAxis: {
    categories: <?php echo $encodeDataHora; ?>
},

This way the graph appears with the date and time but the values of series do not.

Answer 1

To solve I used the constant JSON_NUMERIC_CHECK, of function json_encode, staying that way:

$valorTendencia[] = $value->Valor;
$encodeValorTendencia = json_encode($valorTendencia, JSON_NUMERIC_CHECK);

$valorObtencao[] = $value->ValorObtencao;
$encodeValorObtencao = json_encode($valorObtencao, JSON_NUMERIC_CHECK);

And switching to Javascript directly:

series: [{
   name: 'Tendência',
   data: <?php echo $encodeValorObtencao; ?>
},

The values despite being numbers, were as string ("value"): string '["2000","2000","2000","700","800","700","2000","2000","2000‌​","2000"]'

By using the constant JSON_NUMERIC_CHECK, values have become numerical since api requires that values passed in data: are numerical.

:string '[2000,2000,2000,700,800,700,2000,2000,2000,2000]'