Spreadsheet_Excel_Reader源代码解析-高手进来帮忙解读一下

Question

 $opcode = ord($this->data[$spos]) | ord($this->data[$spos+1])<<8;
                                                                $conlength = ord($this->data[$spos+2]) | ord($this->data[$spos+3])<<8;
                                                                        if ($opcode != 0x3c) {
                                                                 
                                                                                return -1;
                                                                        }看不懂，$spos什么意思，$opcode 什么意思，为何$opcode != 0x3c？

Answer 1

另外推荐一些读取excel比较好的工具。谢谢啦

Answer 2

用com组件 或 phpexcel类