How can PHP developers ensure that their code is more robust and less error-prone when dealing with comparisons in PHP?

When dealing with comparisons in PHP, developers can ensure that their code is more robust and less error-prone by using strict comparison operators (=== and !==) instead of loose comparison operators (== and !=). Strict comparison operators not only compare the values of variables, but also their data types, leading to more accurate and predictable results.

// Using strict comparison operators to compare variables
$var1 = 5;
$var2 = '5';

if ($var1 === $var2) {
    echo 'The variables are identical.';
} else {
    echo 'The variables are not identical.';
}