PHP how to find Odd and Even numbers

Here is how to find odd and even numbers in php.

How to find if a number is odd or even?
In PHP I learn to use the MOD (%) operator. see below for an example: $i = 10;

if ($i % 2) {
echo "$i is odd";
} else {
echo "$i is even";
}

You can also use the PHP “&” operator that will give you better performance
You can use the PHP code like so:

$i = 10;
if ( $i&1 )
{
echo "$i is odd";
}
else
{
echo "$i is even";
}

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11 thoughts on “PHP how to find Odd and Even numbers

  1. Exactly what i was looking for to sort out an absolutely massive list with each item duplicated. wrote a quick script, popped everything into an array and then just showed the even numbered entries. Half an hour of tedious deleting became five minutes of work. Thanks!! 🙂

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