Implements array_replace_recursive() for PHP <5.3.0.

• link: http://us3.php.net/array_replace_recursive
• usedby: ShrimpTest_Model::update_experiment_variant()
• uses: array_replace_recursive_recurse()

• array $array
• array $array1

Register a custom variant type

The variant type specification will be stored within ShrimpTest_Model::variant_types, keyed by the variant type $name. If $args is a class name, an instance of that class will be initialized and used.

• link: http://shrimptest.com/docs/variant-and-metric-api/
• usedby: ShrimpTest::load_default_metric_and_variant()

• string $name
• object|array|classname $args