PHP教程.应用实例3

答案：PHP计数器
 
 
     <?php 
   
   
  $counterFile = "balong.txt";//存储数值的文件名几路径 
   
  function displayCounter($counterFile) { 
   $fp = fopen($counterFile,"rw"); 
   $num = fgets($fp,5); 
   $num += 1; 
   print "您是第 "."$num"." 个看巴泷计数器的家伙"; 
   exec( "rm -rf $counterFile"); 
   exec( "echo $num > $counterFile"); 
  } 
   
  if (!file_exists($counterFile)) { 
   exec( "echo 0 > $counterFile"); 
  } 
   
  displayCounter($counterFile); 
   
  ?>

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