';
require ('../../config.php');
if(function_exists('set_time_limit')){
set_time_limit(3000);
}
$buffer = ini_get('output_buffering');
echo str_repeat(' ',$buffer+1); //防止浏览器缓存
ob_end_flush(); //关闭缓存
ini_set('memory_limit','1024M');
echo '检测以下数据，输出bz2解压读出数据为-4:
';
$page=1;
//读1500条记录
for($i=0;$i<10;$i++){
$init_memory = memory_get_usage();
ob_start();
$pagesize = 100;
//之前转换的方法 (测试的表)
$strsql="SELECT t.*,p.name,p.id,p.course FROM mdl_programming p join mdl_programming_tests t on t.programmingid=p.id where (t.gzinput is not null or t.gzoutput is not null ) limit " . ($page-1)*$pagesize.','.$pagesize . "";
// 新的转换方法 (服务器上最新的表，应该使用这个)
// $strsql="SELECT * FROM mdl_programming_tests t , mdl_programming p where t.programmingid=p.id limit " . ($page-1)*$pagesize.','.$pagesize . "";
echo $strsql.'
';
echo '正在处理：'. ($page-1)*$pagesize.','.$pagesize .'条记录
';
flush;
// 执行sql查询
$result = $DB->get_records_sql($strsql);
foreach($result as $key => $value){
$obj = new stdClass();
$obj = $value;
//output
if(!is_null($obj->gzoutput)){
$bz_output = '';
$bz_output = bzdecompress($obj->gzoutput);
if($bz_output=='-4'){
echo $obj->course.':'.$obj->id .'-'.$obj->name .'-'.$obj->seq . '--ouput--不正常的数据
';
flush;
}
}
//input
if(!is_null($obj->gzinput)){
$bz_input = '';
$bz_input = bzdecompress($obj->gzinput);
if($bz_input=='-4'){
echo $obj->course.':'.$obj->id .'-'.$obj->name .'-'.$obj->seq.'--inpu--不正常的数据
';
flush;
}
}
unset($bz_output); unset($bz_input); unset($obj);
}
ob_flush();
flush();
sleep(1);
$page++;
$final_memory = memory_get_usage();
$final_memory = ceil(($final_memory - $init_memory)/1024);
echo '
当前使用的内存是：'.$final_memory.' kb
';
flush;
}
?>