This blog describes how to find prime numbers between 1 and
100 using PHP. Prime number is a number which is divided by 1 and itself. Consider the number 5. It is prime number
because it can be divided by 1 and 5.
PHP program for prime numbers:
Consider the
below program which is used to find prime numbers from 1 to 100.
<?php
for($i = 1; $i <= 100; $i++)
$mm = 0;
for($j = 2; $j <= $i/2; $j++) {
//only not prime numbers
if ($i % $j == 0) {
$mm++;
break;
}
}
if ($mm == 0) {
echo"$i is prime number<br/>";
}
}
?>
for($i = 1; $i <= 100; $i++)
$mm = 0;
for($j = 2; $j <= $i/2; $j++) {
//only not prime numbers
if ($i % $j == 0) {
$mm++;
break;
}
}
if ($mm == 0) {
echo"$i is prime number<br/>";
}
}
?>
In above
program, if a number is divided by any number except 1 and itself, then it is
not prime number. Otherwise it is a prime number.
Now you got prime numbers between 1 and 100 using PHP.
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