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Re: array filtering question [message #178193 is a reply to message #178189]

Mon, 21 May 2012 19:19

bill
Messages: 310
Registered: October 2010

Karma:

Senior Member

On 5/21/2012 1:26 PM, Thomas 'PointedEars' Lahn wrote:
> 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

Thanks for the education.

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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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