What are the potential pitfalls of comparing values with strings instead of numbers in PHP?

Comparing values with strings instead of numbers in PHP can lead to unexpected results due to PHP's loose typing system. It may result in type coercion, where PHP tries to convert one type to another for the comparison, leading to inaccurate comparisons. To solve this issue, always ensure that the values being compared are of the same type, either both strings or both numbers.

// Example of comparing numbers as strings
$num1 = "10";
$num2 = "5";

// Incorrect comparison
if ($num1 > $num2) {
    echo "Num1 is greater than Num2";
} else {
    echo "Num1 is not greater than Num2";
}

// Correct comparison
if ((int)$num1 > (int)$num2) {
    echo "Num1 is greater than Num2";
} else {
    echo "Num1 is not greater than Num2";
}