What are the potential pitfalls of using is_int, is_float, and is_number functions in PHP for validating float values?

The potential pitfall of using is_int, is_float, and is_numeric functions in PHP for validating float values is that is_int will return false for float values, is_float will return false for integer values, and is_numeric will return true for values like "2.3e5" which are not typical float values. To accurately validate float values, it is recommended to use is_numeric along with a check for decimal point presence.

function is_valid_float($value) {
    return is_numeric($value) && strpos($value, '.') !== false;
}

// Example usage
$value = 3.14;
if(is_valid_float($value)) {
    echo "Valid float value!";
} else {
    echo "Not a valid float value!";
}