Re: Help with variable variables not being set for a multi-dimensional array

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On Tue, Nov 9, 2010 at 6:55 PM, Daevid Vincent <daevid@xxxxxxxxxx> wrote:

> I've used variable variables before but for some reason I can't figure this
> snippet out. Why doesn't $ini_file get set (or appended to).
>

AFAIK variable variables can only reference actual variables--not array
subscripts or other non-variable syntax elements such as "->" or "::".
eval() can do this because it parses the code as PHP. Variable variables
take the *variable name* contained in the variable and look it up in the
current scope. This is a variable name:

    ini_array

This is not:

    ini_array['agis_core']['adapter']

I think you can use references here to do what you need. Warning: I only
tested the basics of this in the interpreter without running this exact
code.

    public function explode_ini()
    {
        $ini_array = array();

        foreach($this->ini_array as $heading => $key_vals)
        {
            foreach ($key_vals as $k => $v)
            {
                $path = &$ini_array[$heading];
                $subsection = explode('.', $k);
                foreach ($subsection as $ss)
                    $path = &$path[$ss];
                $path = $v;
                unset($path);
            }
        }

        $this->ini_array = $ini_array;
    }

David

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