Example service with factory method

gistfile1.txt

<?xml version="1.0" ?>
<container xmlns="http://symfony.com/schema/dic/services"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">

    <services>
        <service id="foo" class="DateTime"
                 factory-class="DateTime"
                 factory-method="createFromFormat">
            <argument>Ymd</argument>
            <argument>20120101</argument>
        </service>
    </services>

</container>

-----------------------------------------

services:
    foo:
        class: DateTime
        factory_class: DateTime
        factory_method: createFromFormat
        arguments:
            - Ymd
            - 20120101