摘要:
function echo_error($str){ return $str; } function get_str($str){ return $str; } $str = "hello word!"; if(empty(get_str($str))){ echo echo_error('错误'); }else{ echo $str; }上面程序运行的时候就会出现 Fatal error: Can't use function return value in write context in E:\appserv\www\http.php on l 阅读全文