覆盖函数调用上的Array值

I am using CodeIgnitor and I have a class with an array defined that has default settings but I want to be able to call one of the functions and replace one or more of the Array values, like this:

In a Model I have:

class Search {
    var $items = array("limit" => 10, "query"=>"foobars");

    function dosearch($items) {
        ...
   }

}

then call it from a Controller...

$this->load->model('search_model');
$items = array("limit"=>100);
$this->search_model->dosearch($items);

To be clear I just want to override some of the Models Class Array values and leave the rest as they are.

How can I best do this?

Thanks.

OK, I worked out a really elegant solution that works for CodeIgnitor.

Create a config file, let's call it defaultdata.php and add your default data.

$config['searchData'] = array("limit"=>10, "query"=>"foobar");

then in your Controller add:

$this->config->load('defaultdata');
$this->load->model('dostuff_model');

$temp = $this->config->item('searchData');

$temp["limit"] = 100;
$data = $this->dostuff_model->search($temp);
...

and then you have the full array modified for this call ready to go! BOOM!!!!!

Thanks for your replies above guys, it helped me think this through.

You want to replace the $this->items array with a new one or just change a key's value? In your example you're changing the whole array. If you wanna just change just one key, then do this $this->items['limit'] = 100.

I guess this is what you are looking for:

Extend your method implementation like this:

class Search {
    var $items = array("limit" => 10, "query"=>"foobars");

    function dosearch($override=array()) {
        // maybe first some general plausibility checks inside $override...
        if ( ! is_array($override) )
            return FALSE; // better to throw an exception here!
        // make a copy of $this->items you can modify:
        $innerItems = $this->items;
        // then use values inside $override
        foreach ($override as $key=>value) {
            // then some specialized plausibility checks, for example: 
            if ( ! in_array($key, array('limit','query') )
                continue;
            // is 'limit' a valid integer inside the range ]0,100]?
            if ( ('limit'==$key) && (0<(int)$value) && (100>=(int)$value) )
                $value=(int)$value;
            else 
                continue;
            // all fine, use override value
            $innerItems[$key] = $value;
        }
        // now do whatever you want with $innerItems
        // ...
   }    
}

Then you can do this at runtime:

$this->load->model('search_model');
$items = array("limit"=>100);
$this->search_model->dosearch($items);

Note that I did not test this, just wrote it down. I hope there is no minor typo left in it ;-)