A. 对 B. 错
A. ltrim() B. rtrim() C. trim() D. time()
A. linux is Linux B. is Linux C. PHP is inux D. PHP is
A. explode() B. arsort() C. implode( ) D. natsort()
A. strstr, explode, print_r B. strchr, split, var_dump C. strstr,explode, echo D. strchr, split, var,_dump