Use PHP program to display random advertising images_PHP tutorial

The following is the quoted content:
#########Random ad display##########
function myads(){
$dir="ads"; #Set the directory to store records
//$dir="ads"; #Set the directory to store records
$ads="$dir/ads.txt"; #Set advertising code file
$log ="$dir/ads.log"; #Set ip record file

$ads_lines=file($ads);
$lines=count($ads_lines);#Total number of lines in the file

####Read the total number of ads $ads_count and the number of displays to the array $display_array########
$ads_count=0;
$display_count=0;
for ($i=0;$i<$lines;$i ){
if((!strcmp(substr($ads_lines[$i],0,7),"display"))){
$ads_count =1;
$display_array[$ads_count]=substr($ads_lines[$i],8);
$display_count =$display_array[$ads_count];
}
}
####Decided to randomly display the serial number $display_rand#####
srand((double)microtime()*1000000);
$display_rand = rand(1,$display_count);

###Determine the advertising serial number $ads_num######
$pricount=0;
$ads_num=1;
for($i=1; $i<=$ads_count; $i ) {
$pricount = $display_array[$i];
if ($display_rand<=$pricount) {$ads_num=$i;break;}
}

#####Play ads########
$num=0;
$flag=0;

for($i=0;$i<$lines;$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;}
}
####Record the number of times ads are displayed#########
$fp=fopen($log,"a");
fputs($fp,date( "Y-m-d H:i:s " ).getenv("REMOTE_ADDR")."==>".$ads_num."n");
fclose($fp);
}
?>


Advertising code file ads.txt
The following is the quoted content:
########Each ad code is separated by '#', display is the display weighting number, the larger the number, the more times it will be displayed ######
display=10


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




Just call

http://www.bkjia.com/PHPjc/631966.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/631966.htmlTechArticleThe following is the quoted content: ?php #########Random ad display#### ###### function myads(){ $dir=ads; #Set the directory where records are stored //$dir=ads; #Set the directory where records are stored $ads=$dir/a...