In my earlier articles, we have see calculating arithmetic mean in SQL Server, C#.NET and Python. Now we will see how to calculate mean in PHP. **Mean** is just the average of the given set of numbers calculated by dividing the sum of all the numbers in the set by the count of numbers in the set. So, we can use PHP’s **array_sum()** function to get the sum of the numbers in the array. Then, use the **count()** function to get the count of elements in the array. Finally, divide the sum of the array by the count to get the average, that is the mean of the array. Below is the sample:

## Sample code to calculate mean in PHP

```
<?php
function getMean($arrInput){
if(is_array($arrInput)){
// Arithmetic Mean = Average of all the numbers in a set
$mean = array_sum($arrInput) / count($arrInput);
return $mean;
}
}
$array = array(220, 100, 190, 180, 250, 190, 240, 180, 140, 180, 190);
echo 'Mean: '.getMean($array).' <br/>';
?>
```

### Output

```
Mean: 187.27272727273
```

## Related Articles

## Reference

- More about arithmetic mean at Wikipedia.