In the given code snippet, why does the if statement always execute the "fall1" block, even when the variable type is boolean according to gettype?

The issue is that in PHP, the `gettype()` function returns the type of a variable as a string. So when comparing the result of `gettype()` to `'boolean'`, it will always be false because the result is a string, not a boolean value. To solve this issue, you should use the `===` operator to compare both the value and the type of the variable.

// Incorrect code snippet
$var = true;

if (gettype($var) == 'boolean') {
    echo "fall1";
} else {
    echo "fall2";
}
```

```php
// Corrected code snippet
$var = true;

if (gettype($var) === 'boolean') {
    echo "fall1";
} else {
    echo "fall2";
}