68 lines
2.5 KiB
PHP
68 lines
2.5 KiB
PHP
<?php
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echo '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
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require ('../../config.php');
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if(function_exists('set_time_limit')){
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set_time_limit(3000);
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}
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$buffer = ini_get('output_buffering');
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echo str_repeat(' ',$buffer+1); //防止浏览器缓存
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ob_end_flush(); //关闭缓存
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ini_set('memory_limit','1024M');
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echo '<h1>检测以下数据，输出bz2解压读出数据为-4:</h1>';
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$page=1;
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//读1500条记录
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for($i=0;$i<10;$i++){
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$init_memory = memory_get_usage();
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ob_start();
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$pagesize = 100;
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//之前转换的方法 (测试的表)
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$strsql="SELECT t.*,p.name,p.id,p.course FROM mdl_programming p join mdl_programming_tests t on t.programmingid=p.id where (t.gzinput is not null or t.gzoutput is not null ) limit " . ($page-1)*$pagesize.','.$pagesize . "";
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// 新的转换方法 (服务器上最新的表，应该使用这个)
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// $strsql="SELECT * FROM mdl_programming_tests t , mdl_programming p where t.programmingid=p.id limit " . ($page-1)*$pagesize.','.$pagesize . "";
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echo $strsql.'<br/>';
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echo '正在处理：'. ($page-1)*$pagesize.','.$pagesize .'条记录<br/>';
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flush;
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// 执行sql查询
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$result = $DB->get_records_sql($strsql);
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foreach($result as $key => $value){
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$obj = new stdClass();
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$obj = $value;
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//output
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if(!is_null($obj->gzoutput)){
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$bz_output = '';
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$bz_output = bzdecompress($obj->gzoutput);
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if($bz_output=='-4'){
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echo $obj->course.':'.$obj->id .'-'.$obj->name .'-'.$obj->seq . '--ouput--不正常的数据<br/>';
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flush;
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}
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}
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//input
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if(!is_null($obj->gzinput)){
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$bz_input = '';
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$bz_input = bzdecompress($obj->gzinput);
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if($bz_input=='-4'){
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echo $obj->course.':'.$obj->id .'-'.$obj->name .'-'.$obj->seq.'--inpu--不正常的数据<br/>';
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flush;
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}
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}
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unset($bz_output); unset($bz_input); unset($obj);
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}
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ob_flush();
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flush();
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sleep(1);
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$page++;
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$final_memory = memory_get_usage();
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$final_memory = ceil(($final_memory - $init_memory)/1024);
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echo '<br/>当前使用的内存是：<h1>'.$final_memory.' kb </h1>';
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flush;
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}
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?>
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