What are the potential pitfalls of relying solely on gettype to determine variable types in PHP?

Relying solely on `gettype` to determine variable types in PHP can be problematic because it does not always return the most accurate type information, especially for objects and arrays. To accurately determine variable types, it is recommended to use `is_array`, `is_object`, `is_string`, `is_int`, etc., in addition to `gettype` for more precise type checking.

$var = "Hello";

if (is_string($var)) {
    echo "Variable is a string";
} elseif (is_int($var)) {
    echo "Variable is an integer";
} elseif (is_array($var)) {
    echo "Variable is an array";
} elseif (is_object($var)) {
    echo "Variable is an object";
} else {
    echo "Variable type is unknown";
}