Are there any potential pitfalls to be aware of when working with boolean evaluation in PHP?

One potential pitfall when working with boolean evaluation in PHP is the use of loose comparison operators (==) instead of strict comparison operators (===). This can lead to unexpected results due to type juggling. To avoid this issue, always use strict comparison operators when evaluating boolean values in PHP.

// Incorrect: using loose comparison operator
$var = '0';
if ($var == false) {
    echo 'This will be executed even though $var is not actually false';
}

// Correct: using strict comparison operator
$var = '0';
if ($var === false) {
    echo 'This will not be executed because $var is not strictly equal to false';
}