Test if number is odd or even

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You were right in thinking mod was a good place to start. Here is an expression which will return true if $number is even, false if odd:

$number % 2 == 0

Works for every integerPHP value, see as well Arithmetic OperatorsPHP.

Example:

$number = 20;
if ($number % 2 == 0) {
  print "It's even";
}

Output:

It’s even

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