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Date: Fri, 26 Jul 2013 22:04:53 +0200
From: Luuk <luuk@invalid.lan>
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Subject: Re: Variable variables?
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On 26-07-2013 04:56, Scott Johnson wrote:
> I have a situation which I 'think' I need to use variable variables and
> not sure how to go about it.
>
>
> I have several <select multiple> elements on a search form with their
> names created dynamically and the options created dynamically.
>
> $parent holds the name such as "Women", "Mens" etc..
> $c_id holds category_id and is sent off as the 'value' of the option.
>
> This form is self calling and an array is created for the multiple
> option selected.
>
> Women => array([0]=>20,[1]=>21,...)
> Mens => array([0]=>32,[1]=>35,...)
>
> I am using in_array() to check returned posted values against an id.
>
> How do I reference that array by using the value of $parent.
>
> if $parent is 'Women' I need to reference the array 'Women'
>
> Here is a nutshell of the algorithm.
>
> foreach($parent_ary as $parent) {
>      echo "<select {$parent}[] multiple>";
>      foreach($category_ary as $c_id=>$category) {
>          if(in_array($c_id, array of posted value)) {
>              // Create select option
>          } else {
>              // Create regular option
>          }
>      }
>      echo "</select>";
> }
>
> I hope this makes sense and yes I did RTM but could not transpose what
> they where explaining to what I need to do.
>
> Thanks
> Scotty

This will return 'test':
$a="test"; $b="a"; print ${$b};

so, if $parent="Woman", then ${$parent} should refer to the $Woman[],
and if $parent="Mens" then ${$parent} should refer to $Mens[]