What are the potential pitfalls of relying solely on == for comparison in PHP?

When relying solely on == for comparison in PHP, it can lead to unexpected results due to PHP's loose type comparison rules. This can result in type juggling and potentially allow for unintended type conversions during comparison. To avoid these pitfalls, it is recommended to use strict comparison (===) which checks both value and type.

// Using strict comparison (===) to avoid pitfalls of loose type comparison
if ($var1 === $var2) {
    echo "Variables are identical";
} else {
    echo "Variables are not identical";
}