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Re: array filtering question [message #178189 is a reply to message #178185]

Mon, 21 May 2012 17:26

Thomas 'PointedEars'
Messages: 701
Registered: October 2010

Karma:

Senior Member

Shake wrote:

> El 21/05/2012 16:22, bill escribió:
>> I have a POST array with about 200 elements.
>> There MAY be one or more key elements that start with deleteF~
>> (for example deleteF~EAP, deleteF~Lowfee)
>>
>> What I want to know is if any array element begins with deleteF~
>
> Perhaps you can use multidimensional array here.
>
> If you have something like:
>
> <input type="checkbox" name="item_1" value="x" />
> <input type="checkbox" name="[deleteF~][item_2]" value="x" />
> <input type="checkbox" name="item_3" value="x" />
> <input type="checkbox" name="[deleteF~][item_4]" value="x" />
>
> Perhaps if better to change to:
>
> Then the POST will be:
>
> $_POST['item_1] = 'X';
> $_POST['item_3] = 'X';
> $_POST['deleteF~']['item_2] = 'X';
> $_POST['deleteF~']['item_4] = 'X';
>
> And you can do:
>
> if(isset($_POST['deleteF~'])) foreach($_POST['deleteF~'] as $Item) {
>
> // Do things with this item.
> }

However, if for some reason the markup cannot be changed, the solution still
is rather simple:

$matching_keys = array_filter(array_keys($_POST),
function ($key) {
return preg_match('/^deleteF~/', $key);
});

if ($matching_keys)
{
/* … */
}

<http://php.net/array_keys>
<http://php.net/preg_match>
<http://php.net/array_filter>

PointedEars
--
var bugRiddenCrashPronePieceOfJunk = (
navigator.userAgent.indexOf('MSIE 5') != -1
&& navigator.userAgent.indexOf('Mac') != -1
) // Plone, register_function.js:16

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[Message index]

		array filtering question By: bill on Mon, 21 May 2012 14:22
		Re: array filtering question By: Jerry Stuckle on Mon, 21 May 2012 14:46
		Re: array filtering question By: bill on Mon, 21 May 2012 15:18
		Re: array filtering question By: Jerry Stuckle on Mon, 21 May 2012 16:42
		Re: array filtering question By: bill on Mon, 21 May 2012 19:13
		Re: array filtering question By: Shake on Mon, 21 May 2012 15:01
		Re: array filtering question By: bill on Mon, 21 May 2012 15:20
		Re: array filtering question By: Thomas 'PointedEars' on Mon, 21 May 2012 17:26
		Re: array filtering question By: bill on Mon, 21 May 2012 19:19

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