memcache_test.php

<?php
/*
 Author: NewEraCracker
 License: Public Domain
*/

function MemcachePrintDetails($status)
{
	echo "<table border='1'>";

		echo "<tr><td>Memcache Server version:</td><td> ".$status ["version"]."</td></tr>";
		echo "<tr><td>Process id of this server process </td><td>".$status ["pid"]."</td></tr>";
		echo "<tr><td>Number of seconds this server has been running </td><td>".$status ["uptime"]."</td></tr>";

		// Those variables might not be defined in certain systems
		if ( isset($status ["rusage_user"], $status ["rusage_system"]) )
		{
			echo "<tr><td>Accumulated user time for this process </td><td>".$status ["rusage_user"]." seconds</td></tr>";
			echo "<tr><td>Accumulated system time for this process </td><td>".$status ["rusage_system"]." seconds</td></tr>";
		}

		echo "<tr><td>Total number of items stored by this server ever since it started </td><td>".$status ["total_items"]."</td></tr>";
		echo "<tr><td>Number of open connections </td><td>".$status ["curr_connections"]."</td></tr>";
		echo "<tr><td>Total number of connections opened since the server started running </td><td>".$status ["total_connections"]."</td></tr>";
		echo "<tr><td>Number of connection structures allocated by the server </td><td>".$status ["connection_structures"]."</td></tr>";
		echo "<tr><td>Cumulative number of retrieval requests </td><td>".$status ["cmd_get"]."</td></tr>";
		echo "<tr><td> Cumulative number of storage requests </td><td>".$status ["cmd_set"]."</td></tr>";

		// Avoid division per zero
		if ( $status ["cmd_get"] )
		{
			$percCacheHit=((real)$status ["get_hits"]/ (real)$status ["cmd_get"] *100);
		}
		else
		{
			$percCacheHit=0;
		}
		$percCacheHit=round($percCacheHit,3);
		$percCacheMiss=100-$percCacheHit;

		echo "<tr><td>Number of keys that have been requested and found present </td><td>".$status ["get_hits"]." ($percCacheHit%)</td></tr>";
		echo "<tr><td>Number of items that have been requested and not found </td><td>".$status ["get_misses"]." ($percCacheMiss%)</td></tr>";

		$MBRead= (real)$status["bytes_read"]/(1024*1024);

		echo "<tr><td>Total number of bytes read by this server from network </td><td>".$MBRead." Mega Bytes</td></tr>";
		$MBWrite=(real) $status["bytes_written"]/(1024*1024) ;
		echo "<tr><td>Total number of bytes sent by this server to network </td><td>".$MBWrite." Mega Bytes</td></tr>";
		$MBSize=(real) $status["limit_maxbytes"]/(1024*1024) ;
		echo "<tr><td>Number of bytes this server is allowed to use for storage.</td><td>".$MBSize." Mega Bytes</td></tr>";
		echo "<tr><td>Number of valid items removed from cache to free memory for new items.</td><td>".$status ["evictions"]."</td></tr>";

	echo "</table>";
}

function MemcacheSimpleTest($memcache,$key=null)
{
	// Memcached simple test
	$key = empty($key) ? md5( rand() ): md5($key); //something unique
	for ($k=0; $k<5; $k++)
	{
		$data = $memcache->get($key);
		if ($data == NULL)
		{
			echo "expensive query<br>";

			//generate a random array
			$data = array();
			for ($i=0; $i<100; $i++)
			{
				for ($j=0; $j<10; $j++)
				{
					$data[$i][$j] = 42;  //who cares
				}
			}

			$memcache->set($key,$data,0,3600);
		} else {
			echo "cached<br>";
		}
	}
}

$memcache_obj = new Memcache;
$memcache_obj->addServer('localhost', 11211);

// Sample usage of MemcacheSimpleTest
MemcacheSimpleTest($memcache_obj,"mykey");

// Sample usage of MemcachePrintDetails
MemcachePrintDetails($memcache_obj->getStats());