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ÐèÒªÁ˽âµÄº¯Êý:  
fopen()´ò¿ªÎļþ
filesize()»ñµÃÎļþ´óС
fseek()ÒÆ¶¯ÎļþÖ¸Õë
fgets()µÃµ½ÎļþÖ¸ÕëËùÔÚÐÐÄÚÈÝ
fputs()½«×Ö´®Ð´ÈçÎļþÖ¸ÕëËùÔÚλÖÃ
fclose()¹Ø±ÕÎļþ
file_exists()ÅжÏÎļþÊÇ·ñ´æÔÚ
exec()Ö´ÐÐÍⲿ³ÌÐò  
  
×î¼òµ¥µÄ¼ÇÊýÆ÷:  
<html>  
<head>  
<title>·Ã¿Í¼ÆÊýÆ÷ Ô­ÐÍ</title>  
</head>  
<body>  
<?php  
/*  
(c)1998 David W. Bettis  
ÕâÀïÊǰæÈ¨ÐÅÏ¢  
*/  

$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);  

?>  
</body>  
</html>   
PHP¼ÇÊýÆ÷±È½Ï¼òµ¥°æ£º  
<?
#°æÈ¨Ã»ÓÐÀ²£¬Õâô¼òµ¥  

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

$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.="<img src='";
$shtml.=$strcount[$i];
$shtml.=".gif'>";
}
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";
?> 
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