What are the potential pitfalls of comparing a number with a string in PHP?

Comparing a number with a string in PHP can lead to unexpected results because PHP may attempt to convert the operands to the same type before making the comparison. To avoid this issue, you should ensure that both operands are of the same type before comparing them. You can achieve this by explicitly converting the string to a number using functions like intval() or floatval().

$num = 10;
$str = "10";

// Convert the string to a number before comparison
if ($num === intval($str)) {
    echo "The number and string are equal.";
} else {
    echo "The number and string are not equal.";
}