When does Arizona have jurisdiction of child custody matters?

Arizona has enacted the Uniform Child Custody Jurisdiction and Enforcement Act which specifies that Arizona courts have jurisdiction over child custody if:  (1) Arizona is the home state of the child on the date of the beginning of the proceeding, or was the home state of the child within six months prior to the beginning of the proceeding and the child has been removed from this state, and the petitioning parent or person acting as a parent continues to live in the state; or (2) A court of another state does not have jurisdiction or a court of the home state of the child has declined to exercise jurisdiction on the grounds that Arizona is the more appropriate forum as the child and his parents have a significant connection with Arizona and substantial evidence is available in Arizona concerning the child's care, protection, training and personal relationships; or (3) all other courts having jurisdiction have declined to exercise jurisdiction, or (4) no other state has jurisdiction. A.R.S. § 25-1031(A).