Question

I have the following code:

$chart_data = array();
foreach ($range as $range_day) {
  foreach ($numbers as $number) {
    if($range_day == $number['date']){
      @$chart_data[$range_day] += $number['events'];
    } else {
      if(isset($chart_data[$range_day])){
        $chart_data[$range_day] += 0;
      }
    }
  }
}

This line: $chart_data[$range_day] += 0; was giving me an undefined index error, so I added the isset check, but it’s not set so it wrecks my array. I know that it’s not set, and I don’t care, but I read all over that the @ solution is in poor taste. How can I remove the error the correct way?

Answer 1

You could just set it to zero at the beginning:

$chart_data = array();
foreach ($range as $range_day) {
  $chart_data[$range_day] = 0;
  foreach ($numbers as $number) {
    if($range_day == $number['date']){
      $chart_data[$range_day] += $number['events'];
    } else {
      if(isset($chart_data[$range_day])){
        $chart_data[$range_day] += 0;
      }
    }
  }
}