This is a simple program in PHP to find prime numbers using for loop and if statement.

<?php

error_reporting(E_ALL);

//Program to find prime numbers in between a range

$num =23;

for( $j = 2; $j <= $num; $j++ )

{

for( $k = 2; $k < $j; $k++ )

{

if( $j % $k == 0 )

{

break;

}

}

if( $k == $j )

echo “Prime Number : “, $j, “<br>”;

}

**OUTPUT**

Prime Number : 2

Prime Number : 3

Prime Number : 5

Prime Number : 7

Prime Number : 11

Prime Number : 13

Prime Number : 17

Prime Number : 19

Prime Number : 23