Random ad display (PHP function)_PHP tutorial

#########Random ad display##########
function myads(){
$dir="ads"; #Set storage Recorded directory
//$dir="ads"; #Set the directory where records are stored
$ads="$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 into 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); Serial number $display_rand#####
srand((double)microtime()*1000000);
$display_rand = rand(1,$display_count);

###Determine the advertising sequence 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 advertising code## #######
$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 ad display times#########
$fp=fopen($log,"a");
fputs($fp,date( "Y-m-d H:i:s " ).getenv("REMOTE_ADDR")."==>".$ads_num."n");
fclose($fp);
}
?>

advertising Code file ads.txt

########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





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truehttp: //www.bkjia.com/PHPjc/315413.htmlTechArticle?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/ads.txt; #Set the advertising code file...