The biggest problem with assignement in condition is when you have more than
one condition:

if ($foo = foo() && bar())

Will not work as expected (given you wanted the result of foo() in $foo).
you'd rather write:

if (($foo = foo()) && bar())

Also, to avoid confusion with ==, you can invert the terms of the condition:

if (bar() == 'bar')

since forgetting a = will raise a fatal error

also, +1 to what David said


On Wed, Dec 16, 2009 at 10:24 PM, David at Artefactual <
[email protected]> wrote:

> I think this code example is a bit problematic because the conditional
> statement is not actually returning a boolean value, it's relying on
> php's loose comparisons to evaluate the truth of the conditional.  I
> think it's clearer to explicitly indicate your true / false condition:
>
> if (null !== ($results = $this->getResults()))
> {
>
> Just my two bits.
>
> David Juhasz
>
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