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fopen()´ò¿ªÎļþ
filesize()»ñµÃÎļþ´óС
fseek()Òƶ¯ÎļþÖ¸Õë
fgets()µÃµ½ÎļþÖ¸ÕëËùÔÚÐÐÄÚÈÝ
fputs()½«×Ö´®Ð´ÈçÎļþÖ¸ÕëËùÔÚλÖÃ
fclose()¹Ø±ÕÎļþ
file_exists()ÅжÏÎļþÊÇ·ñ´æÔÚ
exec()Ö´ÐÐÍⲿ³ÌÐò

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/*
(c)1998 David W. Bettis
ÕâÀïÊÇ°æȨÐÅÏ¢
*/

$counterFile = "counter.txt";
#ÕâÀïÊǶ¨Òå¼ÇÊýÆ÷Îļþ

function displayCounter($counterFile) {
$fp = fopen($counterFile,"rw");
#´ò¿ªÎļþ£¬ÓöÁд·½Ê½

$num = fgets($fp,5);
#È¡µÃµ±Ç°Êý×Ö

$num += 1;
#¼Ó1

print "ÄúÊÇµÚ "."$num"." λÎÞÁÄ·Ý×Ó";
exec( "rm -rf $counterFile");
exec( "echo $num > $counterFile");
#͵ÀÁµÄ·½Ê½Å¶£¬²»Ê¹ÓÃfputsдÈë
}

if (!file_exists($counterFile)) {
exec( "echo 0 > $counterFile");
}#Èç¹û¼ÇÊýÆ÷Îļþ²»´æÔÚ£¬Ð½¨Ëü²¢ÉèÖÃÄÚÈÝΪ0

displayCounter($counterFile);

?>


PHP¼ÇÊýÆ÷±È½Ï¼òµ¥°æ£º
#°æȨûÓÐÀ²£¬Õâô¼òµ¥

$fp=fopen("counter.txt","r+");
flock($fp,3);
#´ò¿ª¼ÇÊýÆ÷Îļþ²¢Ëøס

$fsize=filesize("count.txt");
$count=fgets($fp,$fsize+1);
$count++;
#È¡µÃÊýÂë²¢¼ÓÒ»

fseek($fp,0);
fputs($fp,$count);
fclose($fp);
#½«ÐÂÊýÂëдÈëÎļþ

echo "ÄãÊÇµÚ $count λ·ÃÎÊÕß";
?>

PHP¼ÇÊýÆ÷ͼÐΰ棺
ÖÆ×÷10¸öͼƬ£¬½«Êý×Ö´®ÓÃͼƬ×éÆðÀ´£¬ÎҾͲ»Ï¸ËµÁË
¼ÙÉèͼƬΪ0.gif ~ 9.gif

....$countΪȡµÃµÄÊýÖµ
$strcount=strval($count);
$strcount=chop($strcount);
$countlen=$strlen($strcount);
$shtml="";
for ($i=0; $i<$countlen; $i++) {
$shtml.="";
}
echo $shtml;
?>

PHP¼ÇÊýÆ÷Êý¾Ý¿â°æ£º
ʹÓÃSQL¼ÇÊýÆ÷£¬ÏȽ¨ºÃ±í
CREATE TABLE counter
(
counter int not null,
id ÿÿÿÿÿint not null
)
INSERT INTO counter(counter,id) VALUE(0,1)

$cOnn=mysql_connect(..., ..., ...);
#MySQLÊý¾Ý¿âÁ¬½Ó

$sql="select * from counter";
$result=mysql_query($sql,$conn);
$objresult=mysql_fetch_object($result);
$count=$objresult->counter;
$count++;

$sql="update counter set counter=".$count."where id=1";
mysql_query($sql,$conn);
mysql_close($conn);


echo "ÄãÊǵÚ$countλ·Ã¿Í";
?>