php虽然己经做到很好很快了,但是如果大数据量时还是会有些卡了,这里介绍一下PHP中使用memcache缓存技术提高响应速度方法,有需要了解的朋友可参考.
memcache既可以在linux下使用,也可以在windows系统下使用,当然首推linux系统,至于如何安装memcache，google一下就什么都出来了.
下面贴一段memcache的使用例子,代码如下:
复制代码 代码如下:
<?php
//连接
$mem = new Memcache;
$mem->connect("127.0.0.1", 11211) or die ("Could not connect");
//显示版本
$version = $mem->getVersion();
echo "Memcached Server version: ".$version."
";
//保存数据
$mem->set('key1', 'This is first value', 0, 60);
$val = $mem->get('key1');
echo "Get key1 value: " . $val ."
";
//替换数据
$mem->replace('key1', 'This is replace value', 0, 60);
$val = $mem->get('key1');
echo "Get key1 value: " . $val . "
";
//保存数组
$arr = array('aaa', 'bbb', 'ccc', 'ddd');
$mem->set('key2', $arr, 0, 60);
$val2 = $mem->get('key2');
echo "Get key2 value: ";
print_r($val2);
echo "
";
//删除数据
$mem->delete('key1');
$val = $mem->get('key1');
echo "Get key1 value: " . $val . "
";
//清除所有数据
$mem->flush();
$val2 = $mem->get('key2');
echo "Get key2 value: ";
print_r($val2);
echo "
";
//关闭连接
$mem->close();
?>
//连接
$mem = new Memcache;
$mem->connect("127.0.0.1", 11211) or die ("Could not connect");
//显示版本
$version = $mem->getVersion();
echo "Memcached Server version: ".$version."
";
//保存数据
$mem->set('key1', 'This is first value', 0, 60);
$val = $mem->get('key1');
echo "Get key1 value: " . $val ."
";
//替换数据
$mem->replace('key1', 'This is replace value', 0, 60);
$val = $mem->get('key1');
echo "Get key1 value: " . $val . "
";
//保存数组
$arr = array('aaa', 'bbb', 'ccc', 'ddd');
$mem->set('key2', $arr, 0, 60);
$val2 = $mem->get('key2');
echo "Get key2 value: ";
print_r($val2);
echo "
";
//删除数据
$mem->delete('key1');
$val = $mem->get('key1');
echo "Get key1 value: " . $val . "
";
//清除所有数据
$mem->flush();
$val2 = $mem->get('key2');
echo "Get key2 value: ";
print_r($val2);
echo "
";
//关闭连接
$mem->close();
?>
例子2,代码如下:
复制代码 代码如下:
<?php
//使用memcache缓存
$mc = memcache_connect('localhost', 11211);
$pn = $mc->get('pid');
echo $pn;
if($pn<1) $pn = 1;
else $pn++;
$mc->set('pid',$pn,0,0); //设置永不过期
memcache_close($mc);
?>
//使用memcache缓存
$mc = memcache_connect('localhost', 11211);
$pn = $mc->get('pid');
echo $pn;
if($pn<1) $pn = 1;
else $pn++;
$mc->set('pid',$pn,0,0); //设置永不过期
memcache_close($mc);
?>
希望本文所述对大家的php程序设计有所帮助。
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