How to Find Prime Number using PHP?

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Solution – Find Prime Number using PHP

<?php
$a = 11;
$b = 0;
for($i = 2; $i<$a; $i++){
	if($a%$i==0){
		$b++;
		break;
	}
}
if($b==0){
	Echo "$a is prime";
}else{
	Echo "$a is not prime";
}
?>