PHP Program to Print Multiplication Table

Use a for loop in PHP to print a multiplication table, for example: for ($i = 1; $i <= 10; $i++) { echo "$num x $i = " . ($num * $i) . "\n"; } prints the table for number $num.

Examples

Input5

Output5 x 1 = 5 5 x 2 = 10 5 x 3 = 15 5 x 4 = 20 5 x 5 = 25 5 x 6 = 30 5 x 7 = 35 5 x 8 = 40 5 x 9 = 45 5 x 10 = 50

Input1

Output1 x 1 = 1 1 x 2 = 2 1 x 3 = 3 1 x 4 = 4 1 x 5 = 5 1 x 6 = 6 1 x 7 = 7 1 x 8 = 8 1 x 9 = 9 1 x 10 = 10

Input10

Output10 x 1 = 10 10 x 2 = 20 10 x 3 = 30 10 x 4 = 40 10 x 5 = 50 10 x 6 = 60 10 x 7 = 70 10 x 8 = 80 10 x 9 = 90 10 x 10 = 100

How to Think About It

To print a multiplication table, think of a number and multiply it by numbers from 1 to 10. Use a loop to repeat the multiplication and print each result in a clear format.

Algorithm

1

Get the number for which to print the multiplication table.

2

Start a loop from 1 to 10.

3

Multiply the given number by the current loop number.

4

Print the multiplication expression and result.

5

Repeat until the loop ends.

Code

php

<?php
$num = 5;
for ($i = 1; $i <= 10; $i++) {
    echo "$num x $i = " . ($num * $i) . "\n";
}
?>

Output

5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
5 x 10 = 50

Dry Run

Let's trace the multiplication table for number 5 through the code.

1

Set number

$num = 5

2

Start loop

$i = 1 to 10

3

Multiply and print

For $i=1: print '5 x 1 = 5' For $i=2: print '5 x 2 = 10' ... up to $i=10

Iteration	Expression	Result
1	5 x 1	5
2	5 x 2	10
3	5 x 3	15
4	5 x 4	20
5	5 x 5	25
6	5 x 6	30
7	5 x 7	35
8	5 x 8	40
9	5 x 9	45
10	5 x 10	50

Why This Works

Step 1: Loop from 1 to 10

The for loop repeats the multiplication for numbers 1 through 10.

Step 2: Multiply and print

Inside the loop, multiply the chosen number by the loop counter and print the result.

Step 3: Display format

The output shows the multiplication expression and its result clearly for each step.

Alternative Approaches

Using while loop

php

<?php
$num = 5;
$i = 1;
while ($i <= 10) {
    echo "$num x $i = " . ($num * $i) . "\n";
    $i++;
}
?>

This uses a <code>while</code> loop instead of <code>for</code>, which is equally effective but less concise.

Using function with parameter

php

<?php
function printTable($num) {
    for ($i = 1; $i <= 10; $i++) {
        echo "$num x $i = " . ($num * $i) . "\n";
    }
}
printTable(5);
?>

Encapsulates the logic in a function for reuse with any number.

Complexity: O(1) time, O(1) space

Time Complexity

The loop runs exactly 10 times, so time is constant regardless of input.

Space Complexity

Only a few variables are used, so space is constant.

Which Approach is Fastest?

All approaches run in constant time; using a for loop is simplest and most readable.

Approach	Time	Space	Best For
For loop	O(1)	O(1)	Simple and clear repetition
While loop	O(1)	O(1)	Same as for loop but less concise
Function with parameter	O(1)	O(1)	Reusable code for any number