文字列の傍受に関するテンセントの質問に対するパロディ

function replace(&$string, $number, $newString){    $tempString       = '';    $saveStringLength = strlen($newString);    $stringLength     = count($string);    for($i=0, $j=0; $i < $saveStringLength; $i++)    {        if( $j < $stringLength )        {            if( $i == $number[$j][0])            {                $begin = $number[$j][1] - $number[$j][0];                while($begin)                {                    $begin--;                    $i++;                }               $j++;            }        }        else        {           $tempString .= $newString[$i];        }    }    $string = $tempString;}

<?php// QQ群：23930992function find($str, $size, &$string, &$number, &$saveString, &$newString) // 查找标签，当 PHP > 5.3 可以把注释去掉{    $i=$j=0;    while(strlen($saveString)<$size)    {        //loop:        if($str[$i] == '<')        {            $k=0;            $number[$j][$k++]=$i;            $string[$j]='';            do            {                $string[$j].=$str[$i];                if($str[$i] == '>')                {                    $number[$j++][$k++]=$i;                    break;                }            }while($str[$i++] != '>');        }        else        {            $saveString.=$str[$i];            /*if(strlen($saveString) == $size)            {                if($str[++$i] =='<')                {                    goto loop;                }                $i--;            }*/        }        $i++;    }    for($j=0; $j<$i; $j++)    {        $newString.=$str[$j];    }}function filter($str)  // 过滤标签，然后进行比较{    $newstr    = '';    $strLength = strlen($str);    for($i=0;$i<$strLength;$i++)    {        switch($str[$i])        {            case '<' : continue;            case '/' : continue;            case '>' : continue;            case ' ' : break 2;            default  : $newstr .= $str[$i];        }    }    return $newstr;}function deleteReservedTag(&$string, &$number, $reserved) // 从标签组里去除 保留标签{	$stringLength   = count($string);	$reservedLength = count($reserved);    for($i=0; $i<$stringLength;$i++)      // 去掉保留标签部分    {        for($j=0;$j < $reservedLength;$j++)        {            if( filter($string[$i]) == filter($reserved[$j]) )            {                $string[$i] = NULL;                for($k=0;$k<2;$k++)                {                    $number[$i][$k] = NULL;                }            }        }    }    $tempString[]    = '';    $tempNumber[][]  = 0;    for($i=0,$j=0; $i < $stringLength; $i++) // 把空的地方填补    {        if($string[$i] != NULL)        {            $tempString[$j]=$string[$i];            for($k=0;$k<2;$k++)            {                $tempNumber[$j][$k] = $number[$i][$k];            }            $j++;        }    }    $string = $tempString;    $number = $tempNumber;}function compare(&$string, &$number)     //比较成对标签{	$stringLength = count($string);    for($i=0; $i < $stringLength; $i++)  //删除成对标签    {        for($j = $i+1; $j < $stringLength; $j++)        {            if( filter($string[$i]) == filter($string[$j]) )            {                $string[$i] = NULL;                $string[$j] = NULL;                for($k=0;$k<2;$k++)                {                    $number[$i][$k] = NULL;                }                for($k=0;$k<2;$k++)                {                    $number[$j][$k] = NULL;                }            }        }    }    $tempString[]    = '';    $tempNumber[][]  = 0;    for($i=0,$j=0; $i < $stringLength; $i++) // 把空的地方填补    {        if($string[$i] != NULL)        {            $tempString[$j]=$string[$i];            for($k=0;$k<2;$k++)            {                 $tempNumber[$j][$k] = $number[$i][$k];            }            $j++;        }    }    $string = $tempString;    $number = $tempNumber;}function replace(&$string, $number, $newString){    $tempString       = '';    $saveStringLength = strlen($newString);    $stringLength     = count($string);    for($i=0, $j=0; $i < $saveStringLength; $i++, $j=0)    {        while( $j < $stringLength )        {            if( $i == $number[$j][0])            {                $i = $number[$j][1];                $i++;            }            $j++;        }        $tempString .= $newString[$i];    }    $string = $tempString;}$sttime = microtime(true);$stmem = memory_get_usage();$str = '        <table id="ctl00_ContentPlaceHolder1_BidDomainName1_Shop1_htmlShop" width="99%" border="0" cellspacing="0" cellpadding="0">	<tr>		<td valign="top"><img id="ctl00_ContentPlaceHolder1_BidDomainName1_Shop1_imgShopLogo" src="http://auction.ename.cn/images/nopic.gif" style="height:74px;width:98px;border-width:0px;" /></td>		<td><h5>364867的玉米小店</h5>                买家信用：<a id="ctl00_ContentPlaceHolder1_BidDomainName1_Shop1_hlBuyerCreditLink" title="0" href="/Customer/UserEvaluate.aspx?uid=364867&amp;from=seller" target="_blank">0<span class="goodssaletitle2"></span></a><br />                卖家好评率：100.00%<br />                买家好评率：0.00%<br />                注册时间：2010年04月29日<br />                <div style="width:230px">荣誉资质：<img ></div>                <div><a id="ctl00_ContentPlaceHolder1_BidDomainName1_Shop1_hlShopUrl" href="http://364867.shop.ename.cn"><img src="/images/scicon.gif" width="117" height="34" border="0" /></a></div></td>	</tr></table>                </td>      </tr>      <tr>        <td class="shopbg04"> </td>      </tr>    </table>';$size=160;$reserved = array //保留标签(    '<br />',    '<br>',    '<hr />',    '<hr>',    '<img />',    '<img>');$string[]='';                                                  // 保存所有标签$number[][]=0;                                                 // 保存所有标签位置$saveString = '';                                              // 保存截取标签后的所有字符串$newString  = '';                                              // 保存所有未截取标签的字符串find($str, $size, $string, $number, $saveString, $newString);  // 查找标签deleteReservedTag($string, $number, $reserved);                // 从标签组里去除 保留标签compare($string, $number);                                     // 从标签组里去除 成对标签replace($string, $number, $newString);printf("截取长度：%d\n\n", $size);printf("完整长度：%s\n\n",$str);printf("处理结果：%s\n\n", $string);printf("截取长度：%s (%s)\n\n",$saveString,strlen($saveString));printf("未处理前：%s\n",$newString);echo "内存使用情况:",(memory_get_usage()-$stmem),"\n";echo "算法运行时间(microtime):",(microtime(true)-$sttime),"\n";?>