从函数查询返回数组结果

Question

Hi all I'm new to oop and I wanted to find out how to return multiple array variable from a function. Please see below for an explanation

function getvalues(){
  //do mysql query using pdo
   while($row = $getmostvalues->fetch(PDO::FETCH_ASSOC)) {
        $value[] = $row['val1'];
        $time[] = $row['time'];

    }


}

how can I retrieve and use say $value[0] in my php code after calling getvalues();

Answer 1

The problem you're looking for an answer on doesn't have anything to do with OOP, but here's your answer. It's more of a question on how to use arrays.

function getvalues(){
    while($row = $getmostvalues->fetch(PDO::FETCH_ASSOC)) {
        $value[] = $row['val1'];
        $time[] = $row['time'];
    }

    return array($value,$time);
}

$retval = getvalues();
$arrValues = $retval[0];
$arrTimes = $retval[1];

Value at index of the values array would then be $arrValues[0].

If you're trying to return an object:

return (object) array('value' => $value, 'time' => $time);

This would return an object with two arrays accessible via $retval->value and $retval->time

If you don't want arrays, cast those arrays as objects as well.