一个简单的图形计数器

/***

hit_count表只一个字段hit_count

page_visit_record表是用来控制一个IP一天内只产生一个计数器跳动

CREATE TABLE page_visit_record (

visit_time datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,

remote_addr char(15) NOT NULL,

visit_page char(60) NOT NULL,

KEY visit_time (visit_time, visit_page),

PRIMARY KEY (visit_time)

);

***/

include("config.inc.php3");

$query="select count(*) as tong from page_visit_record where remote_addr='$REMOTE_ADDR' and date_format(visit_time,'%Y-%m-%d')=curdate()";

$result=@mysql_query($query,$dbconnect);

$has_count=@mysql_result($result,0,"tong");

@mysql_query("lock tables hit_count write",$dbconnect);

$query="select * from hit_count";

$result=@mysql_query($query,$dbconnect);

if(@mysql_num_rows($result)>0){

$cur_count=@mysql_result($result,0,"hit_count");

if($has_count==0){

$cur_count++;

$query="update hit_count set hit_count='$cur_count'";

@mysql_query($query,$dbconnect);

}

@mysql_query("unlock tables",$dbconnect);

}

else{

$cur_count=1;

$query="insert into hit_count (hit_count) values ('$cur_count')";

@mysql_query($query,$dbconnect);

@mysql_query("unlock tables",$dbconnect);

}

while(strlen($cur_count)<8)

$cur_count="0$cur_count";

$visit_time=date("Y-m-d H:i:s");

$query="insert into page_visit_record (visit_time,remote_addr,visit_page) values ('$visit_time','$REMOTE_ADDR','$page')";

@mysql_query($query,$dbconnect);

Header("Content-type: image/gif");

$im = imagecreate(56,16);

$black = ImageColorAllocate($im, 0,0,0);

$blue = ImageColorAllocate($im, 0,0,255);

$white = ImageColorAllocate($im, 255,255,255);

$yellow = ImageColorAllocate($im, 255,255,0);

imagerectangle($im, 0, 0, 54, 14, $blue);

//imagestring($im, 2, 4, 1, $cur_count, $yellow);

imagestring($im, 2, 4, 1, $cur_count, $yellow);

ImageGif($im);

ImageDestroy($im);

?>