(PHP 4, PHP 5)
Finds whether the given variable is a boolean.
The variable being evaluated.
Returns TRUE if var is a boolean, FALSE otherwise.
Example 1. is_bool() examples
<?php$a = false;$b = 0;// Since $a is a boolean, this is trueif (is_bool($a)) { echo "Yes, this is a boolean";}// Since $b is not a boolean, this is not trueif (is_bool($b)) { echo "Yes, this is a boolean";}?>
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