PHP Array Exercises : Calculate and display average temperature

Last update on May 30 2025 13:14:10 (UTC/GMT +8 hours)

9. Average Temperature & Extremes

Write a PHP script to calculate and display average temperature, five lowest and highest temperatures.

Recorded temperatures : 78, 60, 62, 68, 71, 68, 73, 85, 66, 64, 76, 63, 75, 76, 73, 68, 62, 73, 72, 65, 74, 62, 62, 65, 64, 68, 73, 75, 79, 73

Sample Solution:

PHP Code:

<?php
// Define a string of monthly temperatures separated by commas
$month_temp = "78, 60, 62, 68, 71, 68, 73, 85, 66, 64, 76, 63, 81, 76, 73,
68, 72, 73, 75, 65, 74, 63, 67, 65, 64, 68, 73, 75, 79, 73";

// Split the string into an array using commas as the delimiter
$temp_array = explode(',', $month_temp);

// Initialize variables for total temperature and the length of the temperature array
$tot_temp = 0;
$temp_array_length = count($temp_array);

// Iterate through the temperature array, calculate the total temperature
foreach($temp_array as $temp)
{
 $tot_temp += $temp;
}

// Calculate the average high temperature
$avg_high_temp = $tot_temp / $temp_array_length;

// Display the average temperature
echo "Average Temperature is : " . $avg_high_temp . "";

// Sort the temperature array in ascending order
sort($temp_array);

// Display the list of five lowest temperatures
echo " List of five lowest temperatures :";
for ($i = 0; $i < 5; $i++)
{ 
    echo $temp_array[$i] . ", ";
}

// Display the list of five highest temperatures
echo "List of five highest temperatures :";
for ($i = ($temp_array_length - 5); $i < $temp_array_length; $i++)
{
    echo $temp_array[$i] . ", ";
}
?>

Output:

Average Temperature is : 70.6                               
List of five lowest temperatures : 60,  62,  63,  63,  64,
List of five highest temperatures : 76, 78,  79,  81,  85,

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to calculate the average temperature from a list, then display the seven lowest and seven highest readings after sorting.
Write a PHP function to compute the average temperature and identify outliers from a data set, listing the extreme values separately.
Write a PHP program to sort a list of temperatures and then display the average with formatted lists of the seven lowest and highest values, handling duplicate values.
Write a PHP script to process a temperature array, filter out invalid entries, compute the average, and output the extreme temperature lists in a formatted manner.

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PHP Code Editor:

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