在項(xiàng)目中,碰到一個(gè)解析流的操作,php里面沒有現(xiàn)成的類.?
那沒辦法,只能用二進(jìn)制模式打開文件,再和java的datainputstream對(duì)比著打開文件,一個(gè)一個(gè)的實(shí)現(xiàn)流讀取和解析.?

廢話不多說,代碼貼出,其實(shí)很簡(jiǎn)單很簡(jiǎn)單.?

DataInputStream.php

<?php
/**
 * 流解析
 * ---------------------------------------------
 * @Author: Simon 夏向紅 sanwkj@163.com
 * @Date: 2012-02-22
 * @package cn.com.nearme.gostore.theme
 * @name :DataInputStream.php
 * @version v1.0
 * 
*/
class DataInputStream {
    private $stream = null;
     
    /**
     * 構(gòu)造函數(shù)
     *
     * @param stream of fopen .. $in
     */
    public function __construct( $in ){
        $this->stream = $in;
    }
     
    /**
     * 析構(gòu)函數(shù)
     *
     */
    public function __destruct(){
        @fclose( $this->stream );
    }
     
    /**
     * 讀取字節(jié)
     *
     * @param int sizeof you want to read $len
     * @return string
     */
    private function read( $len=1 ){
        $len = intval( $len );
        if( $len>0 ) {
            if( !feof( $this->stream ) ) {
                $read = @fread($this->stream,$len);
                if( strlen($read)!=$len ){
                    throw new Exception(&#39;流文件已經(jīng)到末尾，讀取錯(cuò)誤&#39;,222);
                } else {
                    return $read;
                }
            } else {
                throw new Exception(&#39;流文件已經(jīng)到末尾，讀取錯(cuò)誤&#39;,222);
            }
        } else {
            return &#39;&#39;;
        }
    }
     
    /**
     * 讀取一個(gè)字節(jié),并轉(zhuǎn)換成int
     *
     * @return int
     */
    public function readByte(){
        return hexdec(bin2hex($this->read(1)));
    }
     
    /**
     * 短整形
     *
     * @return int
     */
    public function readShort(){
        return hexdec(bin2hex($this->read(2)));
    }
     
    /**
     * 整形數(shù)據(jù)
     *
     * @return int
     */
    public function readInt(){
        return hexdec(bin2hex($this->read(4)));
    }
     
    /**
     * 讀取一個(gè)字符串
     *
     * @return string
     */
    public function readUTF(){
        $len = $this->readShort();
        return $this->read($len);
    }
     
    /**
     * 讀取指定長(zhǎng)度的數(shù)據(jù),并作為字符串返回,圖片等二進(jìn)制文件,可能需要這樣讀取.
     *
     * @param int $len
     * @return unknown
     */
    public function readFully( $len ) {
        return $this->read( $len );
    }
     
    /**
     * readUTF的別名
     *
     * @return unknown
     */
    public function readString(){
        return $this->readUTF();
    }
     
    /**
     * 長(zhǎng)整形.
     *
     * @return unknown
     */
    public function readLong(){
        return hexdec(bin2hex($this->read(8)));
    }
}
?>