Place an Image Into Text

create a new file, adjust the size according to what you want.

select the horizontal type tool and write what you want.

open the image file that will be inserted into the text.

go to Edit > Define Pattern

back to text file.

go to Layer > Layer Style > Blending Options

put checks on the Pattern Overlay and select images you want to be inserted into the text.

tadaaa, and this is the result :)

 you're finished :)