PHP7.27: Cookie and Session

 

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

<?php   // 有的浏览器不支持Cookie，这要考虑的 $cFile="count.txt"; $acctime=time(); if(file_exists($cFile)){     $fp=fopen($cFile,"r");     $str=fgets($fp,22);     fclose($fp);     $count=trim($str);     $count++; }else{     $count=1; } $first=false; if(!isset($_COOKIE['acctime'])){     setcookie("acctime",$acctime,time()+3600*24);     $first=true;     $acctime=3600*24+$acctime; }else{     $acctime=3600*24+$_COOKIE['acctime']; } if($first||$acctime<=time()){     $count=sprintf("%d",$count);     $fp=fopen($cFile,"w");     fputs($fp,$count);     fclose($fp); }else{     $count--; } //print "您是第 ".$count." 位访客。您访问计入统计的时间是：".date("Y-n-j H:i:s",$acctime)."。"; ?> <?php //读取显示     $f_open=fopen('count.txt','r+');     $count=fgets($f_open);     settype($count,"string");     $len=strlen($count);     $str=str_repeat("0",6-$len);     echo "当前的访问量为：";     for($i=0;$i<=strlen($str);$i++){         echo '<img src=images/0.gif>';     }     for($j=0;$j<$len;$j++){       switch ($count[$j]){             case "0"; $img[$j]="0.gif";break;             case "1"; $img[$j]="1.gif";break;             case "2"; $img[$j]="2.gif";break;             case "3"; $img[$j]="3.gif";break;             case "4"; $img[$j]="4.gif";break;             case "5"; $img[$j]="5.gif";break;             case "6"; $img[$j]="6.gif";break;             case "7"; $img[$j]="7.gif";break;             case "8"; $img[$j]="8.gif";break;             case "9"; $img[$j]="9.gif";break;         }         echo "<img src=images/".$img[$j]." title=".$img[$j].".>";    }   ?>

　　

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

<?php     session_start(); //创建会话     $f_open=fopen('count.txt','r+');     $count=fgets($f_open);     if($_SESSION[count]==''){  //全局变量         $count++;         rewind($f_open);         fwrite($f_open,$count);         fclose($f_open);         $_SESSION[count]=1;  //存储会话变量         //unset($_SESSION[count]); //注销会话变量         //session_unregister($_SESSION[count]) //php4         //session_unset($_SESSION[count])     } ?>