Boolean Values

A Boolean value is one that is in either of two states. They are known as True or False values,in programming. True is usually given a value of 1,and False is given a value of zero. You set them up just like other variables

$trueValue = 1;
$falseValue = 0;

You can replace the 1 and 0 with the words "true" and "false" (without the quotes). But a note of caution,if you do. Try this script out,and see what happens:

<?

$true_value = true;
$false_value = false;

echo "true_value = " . $true_value;
echo " false_value = " . $false_value;

?>