array(4) { [0]=> string(103) "Computer Organization and Design The Hardware Software Interface [RISC-V Edition] by David A. Patterson" [1]=> string(33) " John L. Hennessy (z-lib.org).pdf" [2]=> string(9) " 31286644" [3]=> string(21) " 2020-04-06 18:21:0 " }