Question

What’s the difference between those PHP if expressions!?

if ($var !== false)
{
    // Do something!
}


if (false !== $var)
{
    // Do something!
}

Some frameworks like Zend Framework uses the latest form while the traditional is the first.

Thanks in advance

Answer 1

The result of the expression is the same however it’s a good way of protecting yourself from assigning instead of comparing (e.g writing if ($var = false) instead of if ($var == false), since you can’t assign the value $var to the false keyword)