PHP for loop Exercises : Add all between two integers and display the sum

Last update on May 31 2025 12:58:06 (UTC/GMT +8 hours)

2. Sum Integers 0 to 30

Create a script using a for loop to add all the integers between 0 and 30 and display the sum.

Visual Presentation:

PHP for loop Exercises: Add all between two integers and display the sum

Sample Solution:

PHP Code:

<?php
// Initialize sum variable
$sum = 0;

// Loop through numbers from 1 to 30
for($x=1; $x<=30; $x++)
{
    // Add current number to the sum
    $sum += $x;
}

// Print the sum of numbers from 1 to 30
echo "The sum of the numbers 0 to 30 is $sum"."\n";
?>

Output:

The sum of the numbers 0 to 30 is 465

Explanation:

In the exercise above,

The code starts with a PHP opening tag <?php.
It initializes '$sum' to 0. This variable will store the sum of numbers from 1 to 30.
The code enters a "for" loop that iterates through numbers from 1 to 30 (for($x=1; $x<=30; $x++)), incrementing the variable '$x' by 1 in each iteration.
Within the loop, each value of '$x' is added to the '$sum' variable ($sum += $x;), effectively accumulating the sum of all the numbers from 1 to 30.
After the loop, it prints out the calculated sum using echo, along with a message indicating what the sum represents (echo "The sum of the numbers 0 to 30 is $sum"."\n";).
Finally, the PHP code ends with a closing tag ?>.

Flowchart :

For more Practice: Solve these Related Problems:

Write a PHP script using a for loop that calculates the sum of all integers between 0 and 30 and prints the total without using the built-in array_sum() function.
Write a PHP function that computes the sum of numbers 0 to 30 recursively and outputs the final sum.
Write a PHP program that uses a while loop to sum integers from 0 to 30 and then verifies the total with a for loop.
Write a PHP script that uses the mathematical formula for summing an arithmetic series to calculate the sum from 0 to 30 and displays the result.

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PHP Code Editor:

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