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カウンターのソースはこんな感じ。
class webCounter {
private $m_hMemory;
private $m_szFilename;
private $m_nLastError;
private $m_nSzLastError;
private $m_nExpire;
private $m_nCounterLength;
function __construct($filename) {
$this->m_hMemory = new memcached();
$this->m_szFilename = $filename;
$this->m_nLastError = 0;
$this->m_nSzLastError = "";
$this->m_nExpire = 24*60*60;
$this->m_nCounterLength = 8;
}
function __destruct() {
unset($this->hMemory);
}
// -----------------------------------------------------------------
// input : key
// output : none
// return : false when failed.
// othrwise return array.
// array(0) = web counter.
// array(1) = count to key access.
// -----------------------------------------------------------------
public function getCount($szUniqKey) {
$ret = $this->m_hMemory->getServerList();
if ( empty($ret) ) {
$ret = $this->m_hMemory->addServer("localhost", 11211);
if ( $ret !== true ) {
$this->m_nLastError = $this->m_hMemory->getResultCode();
$this->m_nSzLastError = $this->m_hMemory->getResultMessage();
return(false);
}
}
$value = $this->m_hMemory->get($szUniqKey);
if ( $value !== false ) {
$count = $this->currentCount();
return($count);
}
$ret = $this->m_hMemory->set($szUniqKey, 1, $this->m_nExpire);
if ( $ret !== true ) {
}
$count = $this->incleseWebCounter();
return($count);
}
private function incleseWebCounter() {
$fp = fopen($this->m_szFilename, 'r+');
if ($fp) {
if (flock($fp, LOCK_EX) === false) {
return(0);
}
}
$counter = (int) fgets($fp, $this->m_nCounterLength);
$counter++;
rewind($fp);
if (fwrite($fp, $counter) === FALSE) {
flock ($fp, LOCK_UN);
fclose ($fp);
return(0);
}
flock ($fp, LOCK_UN);
fclose ($fp);
$fotmat = sprintf("%%0%dd", $this->m_nCounterLength);
$counter = sprintf($fotmat, $counter);
return($counter);
}
private function currentCount() {
$fp = fopen($this->m_szFilename, 'r');
if ($fp) {
if (flock($fp, LOCK_SH) === false) {
return(0);
}
}
$counter = (int) fgets($fp, $this->m_nCounterLength);
flock ($fp, LOCK_UN);
fclose ($fp);
// $fotmat = sprintf("%%0%dd", $this->m_nCounterLength);
// $counter = sprintf($fotmat, $counter);
return($counter);
}
}
これをこんなカンジで呼び出します。
$counter_lenght = 8;
$webCounter = new webCounter($gblSzCounter);
$counter = $webCounter->getCount($_SERVER["REMOTE_ADDR"]);
$fotmat = sprintf("%%0%dd", $counter_lenght);
$counter = sprintf($fotmat, $counter);
echo 'Counter: ' . $counter ;
$gblSzCounterにはカウンターファイル名称が格納されています。
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