Random ad display (PHP function)

? Php ######### random ad display ########## functionmyads () {$ dir = "ads "; # set the directory for storing records // $ dir = "ads"; # set the directory for storing records $ ads = "$ dir/ads.txt "; # set the advertisement code file $ log = "$ dir/ads. log "; # set ip record file $ ######## Random ad display ##########
Function myads (){
$ Dir = 'ads'; # set the directory for storing records
// $ Dir = 'ads '; # set the directory for storing records
$ Ads = '$ dir/ads.txt'; # set the ad code file
$ Log = '$ dir/ads. log'; # set the ip record file

$ Ads_lines = file ($ ads );
$ Lines = count ($ ads_lines); # total number of file lines

#### Total number of ad reads $ ads_count and display times to the array $ display_array ########
$ Ads_count = 0;
$ Display_count = 0;
For ($ I = 0; $ I <$ lines; $ I ){
If ((! Strcmp (substr ($ ads_lines [$ I],), 'display '))){
$ Ads_count = 1;
$ Display_array [$ ads_count] = substr ($ ads_lines [$ I], 8 );
$ Display_count = $ display_array [$ ads_count];
}
}
#### Determine the random display sequence number $ display_rand #####
Srand (double) microtime () * 1000000 );
$ Display_rand = rand (1, $ display_count );

### Determine the ad 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 ;}
}

##### Playback advertisement code #########
$ Num = 0;
$ Flag = 0;

For ($ I = 0; $ I <$ lines; $ I ){
If ((! Strcmp (substr ($ ads_lines [$ I],), '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 ad display times #########
$ Fp = fopen ($ log, 'A ');
Fputs ($ fp, date ('Y-m-d H: I: s '). getenv ('remote _ ADDR '). '=> '. $ ads_num. '\ n ');
Fclose ($ fp );
}
?>

Ad code file ads.txt

######## Each advertisement code is separated by '#'. display indicates the display weight, the larger the display frequency ################
################################
Display = 10



################################
Display = 10





Call You can.