| Re: switch with case 0 [message #182625 is a reply to message #182624] |
Sun, 18 August 2013 22:04   |
Norman Peelman
Messages: 126
Registered: September 2010
Karma:
|
Senior Member |
|
|
On 08/18/2013 03:16 PM, Norman Peelman wrote:
> On 08/18/2013 12:28 PM, Thomas Mlynarczyk wrote:
>> Norman Peelman schrieb:
>>
>>> PHP started *before* the big validation era...
>>
>> This may be true, but does that mean we should not validate in PHP? ;-)
>>
>
> By all means no...
>
>>> PHP doesn't just randomly decide to type juggle, it does so in
>>> context. If you want a string "42", you have it. PHP won't do anything
>>> to it until you try to do some math with it (or explicitly ask it to
>>> do so.)
>>
>> Well, unfortunately, <, <=, >, >= and switch give you no possibility to
>> prevent unwanted string->int casts. For equality checks, you can use ===
>> and !==, but there are no corresponding operators for <, > etc. And
>> that's the problem.
>>
>
> $mode = "fop";
> echo (($mode === "$mode") AND ($mode <= "foo")) ? "True\n" : "False\n";
>
Better I think:
((is_string($mode) AND is_string($var)) AND $mode <= $var) ? true : false
((is_int($mode) AND is_int($var)) AND $mode <= $var) ? true : false
--
Norman
Registered Linux user #461062
-Have you been to www.php.net yet?-
|
|
|
|
Calendar
Search
Help
Members
Register
Login
Home
]