On 02.12.2020 at 17:34, Silvio Sparapano wrote: > Hello, > IMHO it’s only a declaration issue. > > In other terms, if documentation of strlen says: > > strlen ( string $string ) : int > > then I mean that $string MUST be a string, and return value MUST be an int. > > But then we found that if $string is null, zero is returned. If $string is an > array, null is returned … > We simply need consistency between how a function is documented, and how it > really works. > I mean, it may also be convenient for strlen to accept a parameter type other > than string (such as null), but it must be well documented.
It is reasonably well documented: | If the parameters given to a function are not what it expects, such as | passing an array where a string is expected, the return value of the | function is undefined. In this case it will likely return NULL but | this is just a convention, and cannot be relied upon. [1] <https://www.php.net/manual/en/functions.internal.php> Regards, Christoph -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: https://www.php.net/unsub.php
