PHP Program to Check Odd Number

February 6, 2021 6:33 pm IST

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What are Odd Numbers?

An integer (never a fraction) that cannot be divided exactly by 2. For example, 3 is an odd number, i.e., 3 % 2 = 1 (not zero).

Note: % is a Modulus (Division Remainder) operator, it finds the remainder after division of one number by another. Please check our Arithmetic Operators for more details.

Tips: It is recommended to use our online Odd Numbers calculator for better understanding.

Using For Loop

In the following example, we will find all the Odd Numbers between 10 and 25 using for loop.

Example

PHP Compiler

<?php $start = 10; $end = 25; echo "Odd numbers between $start and $end: <br>"; for($start=$start; $start<=$end; $start++) { if($start % 2 != 0) echo "$start "; } ?>

Output

Odd numbers between 10 and 25: 11 13 15 17 19 21 23 25

Using While Loop

In the following example, we will find all the Odd Numbers between 10 and 25 using while loop.

Example

PHP Compiler

<?php $start = 10; $end = 25; echo "Odd numbers between $start and $end: <br>"; while($start <= $end) { if($start % 2 != 0) echo "$start "; $start++; } ?>

Output

Odd numbers between 10 and 25: 11 13 15 17 19 21 23 25

Using do while Loop

In the following example, we will find all the Odd Numbers between 10 and 25 using do while loop.

Example

PHP Compiler

<?php $start = 10; $end = 25; echo "Odd numbers between $start and $end: <br>"; do{ if($start % 2 != 0) echo "$start "; $start++; }while($start <= $end); ?>