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PHP实例:用PHP程序实现随机广告图片显示

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Release: 2016-06-21 09:01:30
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  #########随机广告显示##########
  function myads(){
  $dir="ads"; #设置存放记录的目录
  //$dir="ads"; #设置存放记录的目录
  $ads="$dir/ads.txt"; #设置广告代码文件
  $log ="$dir/ads.log"; #设置ip记录文件
  
  $ads_lines=file($ads);
  $lines=count($ads_lines);#文件总行数
  
  ####读出广告总数$ads_count和显示次数到数组$display_array########
  $ads_count=0;
  $display_count=0;
  for ($i=0;$i   if((!strcmp(substr($ads_lines[$i],0,7),"display"))){
   $ads_count+=1;
   $display_array[$ads_count]=substr($ads_lines[$i],8);
   $display_count+=$display_array[$ads_count];
   }
  }
  ####决定随机显示序号$display_rand#####
  srand((double)microtime()*1000000);
  $display_rand = rand(1,$display_count);
  
  ###决定广告序号$ads_num######
  $pricount=0;
  $ads_num=1;
  for($i=1; $i   $pricount += $display_array[$i];
   if ($display_rand  }
  
  #####播放广告########
  $num=0;
  $flag=0;
  
  for($i=0;$i   if((!strcmp(substr($ads_lines[$i],0,7),"display"))){$num++;}
   if(($num==$ads_num)and($flag==0)){$flag=1;continue;}
   if(($flag==1)and strcmp($ads_lines[$i][0],"#")){echo $ads_lines[$i];continue;}
   if(($flag==1)and(!(strcmp($ads_lines[$i][0],"#")))){break;}
  }
  ####纪录广告显示次数#########
  $fp=fopen($log,"a");
  fputs($fp,date( "Y-m-d H:i:s " ).getenv("REMOTE_ADDR")."==>".$ads_num."\n");
  fclose($fp);
  }
  ?>

  广告代码文件ads.txt

  ########每个广告代码之间用'#'隔开,display为显示加权数,越大显示次数越多######
  display=10   
 
  广告1

  ################################
  display=10   
 
  广告2

  调用即可



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