Hi! > External data can have any form of numbers. > Current PHP can handle them as "string". However PHP7's type hint cannot > handle numeric data well because it only has "int" and "float" hints.
This is exactly what's wrong with strict typing in PHP. However, if you use real numeric string and do not enable strict typing - it works just fine. We don't need more types for this. > There are cases that programmer want/need to handle any numeric values. There also cases when programmer needs to handle Roman numbers, phone numbers, valid XML strings and TCP/IP headers. But we should not add types into the language for those. > To avoid this problem, users must use "string" type hint and have to > validate > parameter by themselves. This ruins benefits of type hint. Most PHP will not Typing is not solution for every data restriction, especially not in PHP. If you app needs strings that can not be represented by PHP basic types, you need custom validation code. > but "numeric" type hint may do the job. One function with "int"/"float" > type hint > could break app with current type hint implementation, though. i.e. Working If you type your parameter, then you declare "I want this to fail if the parameter is not of this type". Then you can't complain when it fails - that's exactly what you asked for. -- Stas Malyshev smalys...@gmail.com -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
