It's a phrase that compares something to something else that is owned or possessed by the speaker.
Here are some examples:
* "No hay otra casa como la mía." (There is no other house like mine.)
* "Nunca he visto una sonrisa como la mía." (I've never seen a smile like mine.)
* "Quiero un coche como el tuyo, pero más grande." (I want a car like yours, but bigger.)
The phrase can also be used to describe qualities or characteristics:
* "Ella tiene una voz como la mía." (She has a voice like mine.)
* "Su pelo es como el mío." (Her hair is like mine.)
* "Sus ojos son como los míos." (Her eyes are like mine.)
It's important to note that "como la mía" can sometimes be used figuratively to express a feeling or a state of being:
* "Me siento como la mía después de un largo viaje." (I feel like myself again after a long trip.)
* "Mi mente está como la mía después de una buena noche de sueño." (My mind is clear again after a good night's sleep.)
The meaning of "como la mía" will depend on the context in which it is used.