There are two types of arrays, as follows. But PS does not array this tool, must use PS, can refer to the following two article:
1: Square Array
First press ctrl+alt+t will appear a free transform selection but this is a multiple copy of the selection as long as a move can be copied to determine and then press Ctrl+alt+shift in the press T will repeat the last copy to continue to press T;
2: Circular Array
is to select a pattern, set a 360 degrees in the range to be placed a few, and then copy a in the first position, press Ctrl+t free transform copy of the pattern, the center of the free transform to the center of the array, and then in the angle of the property bar to enter the calculated angle (such as 360 degrees to array 12, Each is 30 angle), determine later this pattern will rotate a certain angle, next press ctrl+shift+alt+e, the effect you can see.
Photoshop Array Features