一个简单的 PHP 访问计数器
<无详细内容>
<?
// start at the top of the page since we start a session
session_name('mysite_hit_counter');
session_start();
//
$fn = 'hits_counter.txt';
$hits = 0;
// read current hits
if (($hits = file_get_contents($fn)) === false)
{
$hits = 0;
}
// write one more hit
if (!isset($_SESSION['page_visited_already']))
{
if (($fp = @fopen($fn, 'w')) !== false)
{
if (flock($fp, LOCK_EX))
{
$hits++;
fwrite($fp, $hits, strlen($hits));
flock($fp, LOCK_UN);
$_SESSION['page_visited_already'] = 1;
}
fclose($fp);
}
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>PHP Hit Counter Example Code</title>
</head>
<body>
<p>Page content...</p>
<div class="counter">
<p>This page has <span><?=$hits;?></span> hits</p>
</div>
</body>
</html>
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