FUDforum: comp.lang.php » On the usage of "@" (error control operator)

Home » Imported messages » comp.lang.php » On the usage of "@" (error control operator)

Show: Today's Messages :: Polls :: Message Navigator

Re: On the usage of "@" (error control operator) [message #178221 is a reply to message #178215]

Wed, 23 May 2012 18:45

Leonardo Azpurua
Messages: 46
Registered: December 2010

Karma:

Member

"Jerry Stuckle" <jstucklex(at)attglobal(dot)net> escribi� en el mensaje
news:jpj296$bh7$1(at)dont-email(dot)me...
> On 5/23/2012 10:49 AM, Leonardo Azpurua wrote:
>> So, I must search an identifier in several associative arrays. And trying
>> to
>> access an array element with an invalid index triggers an error.

Hi,

I might have a valid index or not. And if it is valid, it could be valid on
one among several arrays.

Anyway, I just learnt that isset($arr[$ndx]) does not fire an error if $ndx
is not valid on $arr.

So, instead of

@$x = $arr[$ndx];
if (isset($x)) {
...
}

I should have written

if (isset($arr[$ndx])) {
$x = $arr[$ndx];
...
}

avoiding the rather ugly original construct.

Thanks!
--

Report message to a moderator

[Message index]

		On the usage of "@" (error control operator) By: Leonardo Azpurua on Wed, 23 May 2012 13:17
		Re: On the usage of "@" (error control operator) By: Jerry Stuckle on Wed, 23 May 2012 13:50
		Re: On the usage of "@" (error control operator) By: Leonardo Azpurua on Wed, 23 May 2012 14:49
		Re: On the usage of "@" (error control operator) By: Jerry Stuckle on Wed, 23 May 2012 16:12
		Re: On the usage of "@" (error control operator) By: Leonardo Azpurua on Wed, 23 May 2012 18:45
		Re: On the usage of "@" (error control operator) By: Jerry Stuckle on Wed, 23 May 2012 20:14
		Re: On the usage of "@" (error control operator) By: Shake on Wed, 23 May 2012 14:12
		Re: On the usage of "@" (error control operator) By: Leonardo Azpurua on Wed, 23 May 2012 14:52
		Re: On the usage of "@" (error control operator) By: Shake on Wed, 23 May 2012 15:11
		Re: On the usage of "@" (error control operator) By: Leonardo Azpurua on Wed, 23 May 2012 15:14
		Re: On the usage of "@" (error control operator) By: Jerry Stuckle on Wed, 23 May 2012 16:13
		Re: On the usage of "@" (error control operator) By: Thomas Mlynarczyk on Thu, 24 May 2012 20:26

Previous Topic:	in_array performance in unsorted vs sorted array
Next Topic:	multiple image upload and thumbnail display

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Sat Nov 23 14:06:49 GMT 2024

Total time taken to generate the page: 0.04721 seconds