count_visits(<count_id>);
  

• L'adresse ip du visiteur est différente de la dernière stockée ;
• L'adresse ip est identique mais la visite a eu lieu plus d'une heure auparavant.

    count_id:nb_visits:date:last_ip
  

<?php

function create_line($id, $separator, $count, $clockd, $clockh, $addr) {
        return $id.$separator.$count.$separator.$clockd.'-'.$clockh.$separator.$addr."\n";
}


function compteur($id) {
        $count_file = $_SERVER['DOCUMENT_ROOT']."/count/count.dat";
        $addr = $_SERVER['REMOTE_ADDR'];
        $clockd = date('Ymd');
        $clockh = date('H');
        $separator = ':';
        $min_delay = 2;

        //echo "<br /><h4>Count infos: ".$id."</h4>";
        //echo "Date: ".$clockd."-".$clockh;

        $fd = fopen($count_file, "r");
        if ( $fd == FALSE )
        return 0;

        /* Get all count lines */
        $n = 0;
        $count = array();
        while(!feof($fd)) {
                $line = fgets($fd, 4096);
                $count[] = $line;
                $n++;
        }
        fclose($fd);

        $n--;
        unset($count[$n]);

        //echo "<br />DEBUG: ".$n." différent ids have been read.";

        $id_found = FALSE;
        $same_ip = FALSE;
        for ($i=0; $i<$n; $i++) {
                $line = $count[$i];
                $cur_id = strtok($line, $separator);

                if ( $cur_id == $id ) {
                        /* id found */
                        $id_found = TRUE;
                        $cur_count = strtok($separator);
                        $cur_clockd = strtok('-');
                        $cur_clockh = strtok($separator);
                        $cur_addr = trim(strtok($separator));

                        //echo "<br />The good is found.";
                        if ( $addr != "127.0.0.1" && /* local ip */
                        $addr != "X.X.X.X") /* personal ip */ {
                                if ( strcmp($cur_addr, $addr) == 0 ) {
                                        /* same ip */
                                        //echo "<br />DEBUG: The ip adress is the identical: ".$addr;
                                        $same_ip = TRUE;
                                }
                                else {
                                        /* different ip */
                                        //echo "<br />DEBUG: The ip adress is different: ".var_dump($addr)." vs ".var_dump($cur_addr);
                                        $same_ip = FALSE;
                                }

                                $delay = $clockd - $cur_clockd;
                                //echo "<br />DEBUG: Delay in days: ".$delay;
                                if ( $delay < 0 )
                                return 0;
                                else if ( $delay > 1 ) {
                                        $delay = 24;
                                } else if ($delay == 1) {
                                        $delay = 24 + $clockh - $cur_clockh;
                                } else {
                                        $delay = $clockh - $cur_clockh;
                                }
                                if ( $same_ip == TRUE && $delay <= 0 ) {
                                        //echo "<br />DEBUG: The counter does not change.";
                                        $change = FALSE;
                                } else if ( $same_ip == TRUE && $delay <= 2 )
                                /* update time, but no counter */
                                $change = TRUE;
                                else {
                                        /* different ip or time > min, update count and time */
                                        $change = TRUE;
                                        $cur_count++;
                                }

                                if ( $change == TRUE ) {
                                        //echo "<br />DEBUG: The counter is changing.";
                                        $count[$i] = create_line($cur_id,
                                        $separator,
                                        $cur_count,
                                        $clockd,
                                        $clockh,
                                        $addr);
                                }
                        }
                        break;
                }
        }

        if ( $id_found == FALSE ) {
                /* id not found, add a new line */
                $fd = fopen($count_file, "a");
                if ( $fd == FALSE )
                return 0;
                fwrite($fd, create_line($id, $separator, "1", $clockd, $clockh, $addr));
                fclose($fd);
                $cur_count = 1;
        } else {
                /* increase number */
                if ( $change == TRUE ) {
                        $fd = fopen($count_file, "w");
                        for ($i=0; $i<$n; $i++) {
                                fwrite($fd, $count[$i]);
                        }
                        fclose($fd);
                }
        }

        unset($count);

        return $cur_count;
}

?>