php页面添加计数器

<span> 1</span><span><?</span><span>php
</span><span> 2</span><span>    //$five,$four 等变量表示零的个数，放在数字前边构成6位
</span><span> 3</span><span>    function Counter()
</span><span> 4</span><span>    {                                   //定义函数
</span><span> 5</span><span>        $five = "00000";                                      //声明变量
</span><span> 6</span><span>        $four = "0000";
</span><span> 7</span><span>        $three = "000";
</span><span> 8</span><span>        $two = "00";
</span><span> 9</span><span>        $one = "0";
</span><span>10</span><span>        $counter = "record.dat";                      //存放访问数的目的文件，.dat&#26684;式
</span><span>11</span><span>        if(!file_exists($counter))                    //判断文件是否存在
</span><span>12</span><span>        {
</span><span>13</span><span>            $counter = fopen($counter,"w");
</span><span>14</span><span>            fputs($counter,"0");                      //写入文件
</span><span>15</span><span>            fclose($counter);
</span><span>16</span><span>        }
</span><span>17</span><span>        else
</span><span>18</span><span>        {
</span><span>19</span><span>            $fp = fopen($counter,"r&#43;");
</span><span>20</span><span>            $num = fgets($fp,"1024");                //如果文件存在则读出文件，并加 1
</span><span>21</span><span>            $num = $num &#43; 1;
</span><span>22</span><span>            if($num < 10)
</span><span>23</span><span>                print "$five"."$num";
</span><span>24</span><span>            elseif($num < 100)
</span><span>25</span><span>                print "$four"."$num";
</span><span>26</span><span>            elseif($num < 1000)
</span><span>27</span><span>                print "$three"."$num";
</span><span>28</span><span>            elseif($num < 10000)
</span><span>29</span><span>                print "$two"."$num";
</span><span>30</span><span>            elseif($num < 100000)
</span><span>31</span><span>                print "$one"."$num";
</span><span>32</span><span>            else
</span><span>33</span><span>                print "$num";
</span><span>34</span><span>        }
</span><span>35</span><span>        $fp = fopen($counter,"w");
</span><span>36</span><span>        fputs($fp,"$num");
</span><span>37</span><span>        fclose($fp);
</span><span>38</span><span>    }
</span><span>39</span><span>?></span>

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