简单易用的计数器（数据库）

用法

<?

include(“counter.php”);

counter(__file__);//为文件增加一个计数

if($php_lf==”/index.php”)

{

$count=counter(“index_count”);//为首页增加一个计数

}

el

{

$count=counter(“index_count”,””,0);//取得首页计数

}

echo “你是第$count个访问者”;

?>

——–counter.php———–

<?

if(!ist(特岗教师待遇$php_include_counter_php))

{$php_include_counter_php=__file;

$counter_error_state=0;

$counter_error_msg=””;

function counter($file,$query=””,$add=1)

{

$db_name=”databa”;

$db_ur=”urname”;

$db_pass=”password”;

$db_table=”counter”;

if(empty($file))

{

$counter_error_state=-100;

$counter_error_msg=”缺少第一个参数或参数为空”;

return -100;

}

global $php_lf,$query_string,$counter_error_state,$counter_error_msg;

if(empty($db_ur)||!$db_ur||$db_ur==””)$res=@mysql_connect(“lo静静的calhost”);

el $res=@mysql_connect(“localhost”,$db_ur,$db_pass);

if(!$res)

{

$counter_error_states=-10;

$counter_error_msg=”不能连接数据库”;

return -10;

}

if(!@mysql_lect_db($db_name))

{

$counter_error_states=-11;

$counter_error_msg=”不能选择数据库”;

return -11;

}

el

{

if(!$db_res=@mysql_query(“lect * from “.$db_table))

{

if(!$db_res=@mysql_query(“create table &#政治学理论8220;.$db_table.” (id integer aut广州工商学院o_increment,primary key (id),file varchar(255),query varchar(255),time varchar(255),count int)”))

{

$counter_error_states=-20;

$counter_error_msg=”不能创建数据表”;

return -20;

}

@mysql_free_result($db_res);

}

$str=”lect * from “.$db_table.” where file=\””.$file.”\” and query=\””.$query.”\””;

if(!$db_res=@mysql_query($str))

{

$counter_error_states=-30;

$counter_error_msg=”不能查询记录”;

return -30;

}

$num=@mysql_num_rows($db_res);

if($num>1)

{

$counter_error_states=-40;

$counter_error_msg=”发生没有预期的错误=数据行数错误”;

return -40;

}

$count=0;

$str=”inrt “;

$strwhere=””;

if($num==1)

{

$row=@mysql_fetch_array($db_res);

@mysql_free_res我的青春我做主作文ult($db_res);

$count=$row[“count”];

$id=$row[“id”];

$str=”update “;

$strwhere=” where id=$id”;

}

if($add<1)return $count;

$count+=$add;

$str.=$db_table.” t file=\””.$file.”\”,query=\””.$query.”\”,time=\””.date(“y;n;d;g;i;s”).”\”,count=”.$count.$strwhere;

$db_res=@mysql_query($str);

if(!$db_res)

{

$counter_error_states=-50;

$counter_error_msg=”不能添加或更新记录”;

return -50;

}

return $count;

}

}

}

?>