【php开源代码栏目提醒】:网学会员鉴于大家对php开源代码十分关注,论文会员在此为大家搜集整理了“benchmark.php”一文,供大家参考学习
<!DOCTYPE HTML PUBLIC "-//W3C//DTD
HTML 4.0 Transitional//EN">
<html>
<head>
<title>ADODB Benchmarks</title>
</head>
<body>
<?php
/*
V4.21 20 Mar 2004 (c) 2000-2004 John Lim (jlim@natsoft.com.my). All rights reserved.
Released under both BSD license and Lesser GPL library license.
Whenever there is any discrepancy between the two licenses,
the BSD license will take precedence.
Benchmark code to test the speed to the ADODB library with different databases.
This is a simplistic benchmark to be used as the basis for further testing.
It should not be used as proof of the superiority of one database over the other.
*/
$testmssql = true;
//$test
vfp = true;
$testoracle = true;
$testado = true;
$testibase = true;
$testaccess = true;
$test
mysql = true;
$testsqlite = true;;
set_time_limit(240); // increase timeout
include("../tohtml.inc.php");
include("../adodb.inc.php");
function testdb(&$db,$createtab="create table ADOXYZ (id int, firstname char(24), lastname char(24), created date)")
{
GLOBAL $ADODB_version,$ADODB_FETCH_MODE;
adodb_backtrace();
$max = 100;
$
sql = 'select * from ADOXYZ';
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
//print "<h3>ADODB Version: $ADODB_version Host: <i>$db->host</i> Database: <i>$db->database</i></h3>";
// perform query once to cache results so we are only testing throughput
$rs = $db->Execute($sql);
if (!$rs){
print "Error in recordset<p>";
return;
}
$arr = $rs->GetArray();
//$db->debug = true;
global $ADODB_COUNTRECS;
$ADODB_COUNTRECS = false;
$start = microtime();
for ($i=0; $i < $max; $i++) {
$rs =& $db->Execute($sql);
$arr =& $rs->GetArray();
// print $arr[0][1];
}
$end = microtime();
$start = explode(' ',$start);
$end = explode(' ',$end);
//print_r($start);
//print_r($end);
// print_r($arr);
$total = $end[0]+trim($end[1]) - $start[0]-trim($start[1]);
printf ("<p>seconds = %8.2f for %d iterations each with %d records</p>",$total,$max, sizeof($arr));
flush();
//$db->Close();
}
include("testdatabases.inc.php");
?>
</body>
</html>