PHP code to check whether a number is odd or even

This article introduces a piece of code that uses PHP to determine odd and even numbers for your reference.

This article will share with you a PHP custom function, which is used to detect whether a number is odd or even, and return true or false. The code is very simple and suitable for beginners to refer to.

Code:

<?php

/**
* 数字检测奇偶
* by bbs.it-home.org
*/
$num = 3;

/**
*
* @Check if number is odd or even
*
* @var $num The number to check
*
* Return BOOL
*
*/
function checkNum($num){
  return ($num%2) ? TRUE : FALSE;
}

//调用
if(checkNum($num) === TRUE){
  echo '奇数';
}else{
  echo '偶数';
}
?>

Call example:

<?php
$num=100;
if(checkNum($num)=== TRUE;){
  echo "$num is even";
}

$num=231;
if(checkNum($num) === TRUE){
   echo "$num is odd";
}