随机广告显示(PHP函数)_php基础

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Release: 2016-05-17 09:48:49
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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}

#####播放广告代码#########
$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

  
Chance2mail,好礼物送给您!

################################
display=10


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