PHP program to check if a number is prime or not
To check if a number is prime or not, the code is as follows −
Example
Live Demo
<?php
function check_prime($num)
{
if ($num == 1)
return 0;
for ($i = 2; $i <= $num/2; $i++)
{
if ($num % $i == 0)
return 0;
}
return 1;
}
$num = 47;
$flag_val = check_prime($num);
if ($flag_val == 1)
echo "It is a prime number";
else
echo "It is a non-prime number"
?>Output
It is a prime number
A function named ‘check_prime’ is used to check if the number is prime or not. A number that needs to be checked for being prime is passed as a parameter to the function. The number is defined and this function is called by passing the number as parameter. Relevant message is displayed on the console.
Published on 02-Jul-2020 06:55:06
