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Re: include capturing wrong value [message #184660 is a reply to message #184659]

Tue, 14 January 2014 17:50

Mr Oldies
Messages: 241
Registered: October 2013

Karma:

Senior Member

On Tue, 14 Jan 2014 17:23:25 +0000 (UTC), Denis McMahon wrote:

> On Tue, 14 Jan 2014 11:56:16 -0500, richard wrote:
>
>> $go=$_GET['a'];
>> if(empty($go)){$go=0;}
>>
>> if ($go>=60 and $go<=69) { include
>> "http://mroldies.net/songs/19".$go.".html";}
>> if ($go>="A" and $go<="Z") <<<<<<
>> { include"http://mroldies.net/songs/".$go.".html";}
>>
>> if ($go==2){include "http://mroldies.net/radio/24hours.php";}
>> if ($go==1){include"http://mroldies.net/test/index2.php";}
>> if ($go==0){include "http://mroldies.net/home1.php";}
>>
>> Using this code I now get a warning stating that the file can't be
>> found.
>> "Zero" returns true for the marked line.
>> I can see where that would be the case using or.
>> But not AND!
>
> This is your fucked up comprehension of comparison.
>
>> Since "Zero" is less than "A" then the condition returns false.
>
> You are making an incorrect assumption about the way a string variable is
> compared to the number 0. You are not comparing the string "Zero" with
> the strings "A" and "Z", you are comparing the number 0 with the strings
> "A" and "Z". If you check the relevant php documentation, you will
> understand that the behaviour here is exactly as it is documented to be.
>
>> Why do I not get the same warning from the first match test?
>> "zero" is less than 69 so that should return true.
>
> You are not comparing the string "zero", you are comparing the number 0.
> You are only considering part of the test you are discussing in your
> above statements. You need to consider the whole test. The behaviour
> appears on inspection to be correct.

Point noted and understood.
Still, "AND" is the key. not "OR".
Both must be true to return true.
Since 0 (zero as string) ls not greater than "A" the condition should
return false.

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[Message index]

		include capturing wrong value By: Mr Oldies on Tue, 14 January 2014 16:56
		Re: include capturing wrong value By: Denis McMahon on Tue, 14 January 2014 17:23
		Re: include capturing wrong value By: Mr Oldies on Tue, 14 January 2014 17:50
		Re: include capturing wrong value By: Christoph Michael Bec on Tue, 14 January 2014 18:07
		Re: include capturing wrong value By: Daniel Pitts on Tue, 14 January 2014 18:10
		Re: include capturing wrong value By: Denis McMahon on Tue, 14 January 2014 18:25
		Re: include capturing wrong value By: Arno Welzel on Thu, 23 January 2014 17:50
		Re: include capturing wrong value By: Denis McMahon on Thu, 23 January 2014 18:05
		Re: include capturing wrong value By: Peter H. Coffin on Thu, 23 January 2014 21:56
		Re: include capturing wrong value By: Arno Welzel on Sat, 25 January 2014 09:20
		Re: include capturing wrong value By: Doug Miller on Tue, 14 January 2014 21:20

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