PHP 5.3.0 USE keyword -- how to backport in 5.2?

Question

I have some code that has been written in for php 5.3.0 using the USE function within PHP

can someone help me change this to work for 5.2.9?

$available  = array_filter($objects, function ($object) use ($week) { 
    return !in_array($object, $week);
});

thanks for the help

Answer 1

Not nice, but this would be an equivalent implementation.

class MyWeekFilter {
    protected $_week;

    public function __construct($week) {
        $this->_week = $week;
    }

    public function filter($object) {
        return !in_array($object, $this->_week);
    }
}

$filter    = new MyWeekFilter($week);
$available = array_filter($objects, array($filter, 'filter'));

Answer 2

Is there any difference between author's code

$available = array_filter($objects, function ($object) use ($week) { 
    return !in_array($object, $week);
});

and

$available = array_diff($objects, $week);

?