Php如何数字是双倍还是奇数[重复]

I looked at some questions and answers but didn't find anything. I would like to determine if a number is odd or even. How I can do that?

Example:

odd_or_even(567);

// returns odd

</div>

Use modulo:

if ($id % 2 === 0) {
    echo 'even';
} else {
    echo 'odd';
}