本文實例講述了PHP使用memcache緩存技術提高響應速度的方法。分享給大家供大家參考。具體分析如下：
php雖然己經做到很好很快了,但是如果大數據量時還是會有些卡了,這里介紹一下PHP中使用memcache緩存技術提高響應速度方法,有需要了解的朋友可參考.
memcache既可以在linux下使用,也可以在windows系統下使用,當然首推linux系統,至于如何安裝memcache，google一下就什么都出來了.
下面貼一段memcache的使用例子,代碼如下:
復制代碼代碼如下:
<?php
//連接
$mem = new Memcache;
$mem->connect("127.0.0.1", 11211) or die ("Could not connect");
//顯示版本
$version = $mem->getVersion();
echo "Memcached Server version: ".$version."<br>";
//保存數據
$mem->set('key1', 'This is first value', 0, 60);
$val = $mem->get('key1');
echo "Get key1 value: " . $val ."<br>";
//替換數據
$mem->replace('key1', 'This is replace value', 0, 60);
$val = $mem->get('key1');
echo "Get key1 value: " . $val . "<br>";
//保存數組
$arr = array('aaa', 'bbb', 'ccc', 'ddd');
$mem->set('key2', $arr, 0, 60);
$val2 = $mem->get('key2');
echo "Get key2 value: ";
print_r($val2);
echo "<br>";
//刪除數據
$mem->delete('key1');
$val = $mem->get('key1');
echo "Get key1 value: " . $val . "<br>";
//清除所有數據
$mem->flush();
$val2 = $mem->get('key2');
echo "Get key2 value: ";
print_r($val2);
echo "<br>";
//關閉連接
$mem->close();
?>
//連接
$mem = new Memcache;
$mem->connect("127.0.0.1", 11211) or die ("Could not connect");
//顯示版本
$version = $mem->getVersion();
echo "Memcached Server version: ".$version."<br>";
//保存數據
$mem->set('key1', 'This is first value', 0, 60);
$val = $mem->get('key1');
echo "Get key1 value: " . $val ."<br>";
//替換數據
$mem->replace('key1', 'This is replace value', 0, 60);
$val = $mem->get('key1');
echo "Get key1 value: " . $val . "<br>";
//保存數組
$arr = array('aaa', 'bbb', 'ccc', 'ddd');
$mem->set('key2', $arr, 0, 60);
$val2 = $mem->get('key2');
echo "Get key2 value: ";
print_r($val2);
echo "<br>";
//刪除數據
$mem->delete('key1');
$val = $mem->get('key1');
echo "Get key1 value: " . $val . "<br>";
//清除所有數據
$mem->flush();
$val2 = $mem->get('key2');
echo "Get key2 value: ";
print_r($val2);
echo "<br>";
//關閉連接
$mem->close();
?>
例子2,代碼如下:
復制代碼代碼如下:
<?php
//使用memcache緩存
$mc = memcache_connect('localhost', 11211);
$pn = $mc->get('pid');
echo $pn;
if($pn<1) $pn = 1;
else $pn++;
$mc->set('pid',$pn,0,0); //設置永不過期
memcache_close($mc);
?>
//使用memcache緩存
$mc = memcache_connect('localhost', 11211);
$pn = $mc->get('pid');
echo $pn;
if($pn<1) $pn = 1;
else $pn++;
$mc->set('pid',$pn,0,0); //設置永不過期
memcache_close($mc);
?>
希望本文所述對大家的php程序設計有所幫助。
