What potential issues can arise when calculating and outputting average values using PHP?

One potential issue when calculating and outputting average values using PHP is the possibility of dividing by zero if the array being averaged is empty. To solve this issue, you can check if the array is empty before calculating the average and handle it accordingly, such as returning a message or setting the average to 0. 

<?php
// Sample array to calculate average
$values = [5, 10, 15];

// Check if the array is empty
if(!empty($values)) {
    // Calculate the average
    $average = array_sum($values) / count($values);
    echo "Average: " . $average;
} else {
    echo "Unable to calculate average as the array is empty.";
}
?>

Keywords

data type conversion precision errors rounding errors floating-point arithmetic PHP math functions

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