php的计数器程序

1）文本计数器<?php$countfile="/count.txt";;;//设置保存数据的文件if (!file_exists($countfile)){//判断文件是否存在exec( "echo 0 > $countfile");} $fp = fopen($countfile,"rw"); $length=filesize($countfile);$num = fgets($fp,$length); $num += 1; exec( "rm -rf $countfile");exec( "echo $num > $countfile");print "访问量总计:"."$num"."人次";;;//显示访问次数?>2）图形计数器<?$countfile="/count-num.txt";;;//设置保存数据的文件if (!file_exists($countfile));;//判断文件是否存在{exec( "echo 0 > $countfile");} $fp = fopen($countfile,"rw"); $length=filesize($countfile);$num = fgets($fp,$length); $num += 1; exec( "rm -rf $countfile");exec( "echo $num > $countfile");$len_str = strlen($num);for($i=0;$i<$len_str;$i++){$each_num = substr($num,$i,1);$out_str = $out_str . "<img src="$each_num.gif">";}print "访问量总计:"."$out_str"."人次";;;//显示访问次数?>