function mysql_bak_out($tabledb)
{
global $db, $rowsnum, $fileNUM, $bak_path, $baksize, $tableid, $page;
//此page指的是每个表数据大的时候.需要多次跳转页面读取
if (!$page) {
$page = 1;
}
$min = ($page - 1) * $rowsnum;
$tableid = intval($tableid);
if ($show = mysql_get_table_value($tabledb[$tableid], $min, $rowsnum)) {
//表中有数据,还要继续读取
$page++;
} else {
//表中无数据的情况,继续下一个表
$page = 0;
$tableid++;
}
//分卷是从0开始的
$fileNUM = intval($fileNUM);
$filename = "{$fileNUM}.sql";
$show && write_file("{$bak_path}/{$filename}", $show, 'a+');
//对文件做精确大小分卷处理
$show && cksize("{$bak_path}/{$filename}", $baksize);
//如果还存在表时.继续,否则结束
if ($tabledb[$tableid]) {
//不断变化的变量有 $page,$tableid,$fileNUM
return true;
} else {
@unlink(ROOT_PATH . "cache/bak_mysql.txt");
return false;
}
}
function bak_out($tabledb)
{
global $db, $pre, $rowsnum, $tableid, $page, $timestamp, $step, $rand_dir, $lfj, $baksize;
//还没有随机生成目录之前
if (!$rand_dir) {
/*特地处理有些服务器不能创建目录的情况,此时必须手工创建mysql目录*/
if (file_exists(ROOT_PATH . "cache/mysql_bak/mysql")) {
if (!is_writable(ROOT_PATH . "cache/mysql_bak/mysql")) {
showmsg(ROOT_PATH . "cache/mysql_bak/mysql目录不可写,请改属性为0777");
}
$rand_dir = "mysql";
$d = opendir(ROOT_PATH . "cache/mysql_bak/mysql/");
while ($f = readdir($d)) {
if (eregi("\\.sql\$", $f)) {
unlink(ROOT_PATH . "cache/mysql_bak/mysql/{$f}");
}
}
write_file(ROOT_PATH . "cache/mysql_bak/mysql/index.php", str_replace('<?php die();', '<?php', read_file('mysql_into.php')));
$show = create_table_all($tabledb);
//备份数据表结构
//$db->query("TRUNCATE TABLE {$pre}bak");
//bak_dir('../data/'); //备份缓存
} else {
$rand_dir = date("Y-m-d.", time()) . strtolower(rands(3));
$show = create_table_all($tabledb);
//备份数据表结构
if (!file_exists(ROOT_PATH . "cache/mysql_bak")) {
if (!@mkdir(ROOT_PATH . "cache/mysql_bak", 0777)) {
showmsg(ROOT_PATH . "cache/mysql_bak目录不能创建");
}
}
if (!@mkdir(ROOT_PATH . "cache/mysql_bak/{$rand_dir}", 0777)) {
showmsg(ROOT_PATH . "cache/mysql_bak/{$rand_dir},目录不可写,请改属性为0777");
}
//复制一个自动还原的文件到SQL目录.方便日后还原
write_file(ROOT_PATH . "cache/mysql_bak/{$rand_dir}/index.php", str_replace('<?php die();', '<?php', read_file('mysql_into.php')));
//$db->query("TRUNCATE TABLE {$pre}bak");
//bak_dir('../data/'); //备份缓存
}
}
!$rowsnum && ($rowsnum = 500);
//每次读取多少条数据
//此page指的是每个表大的时候.需要多次跳转页面读取
if (!$page) {
$page = 1;
}
$min = ($page - 1) * $rowsnum;
$tableid = intval($tableid);
//$show.=$tablerows=bak_table($tabledb[$tableid],$min,$rowsnum);
//当前表能取到数据时,继续此表下一页取数据,否则从下一个表的0开始
if ($tablerows = bak_table($tabledb[$tableid], $min, $rowsnum)) {
$show .= $tablerows;
unset($tablerows);
//释放内存
$page++;
} else {
$page = 0;
$tableid++;
}
//分卷是从0开始的
$step = intval($step);
$filename = "{$step}.sql";
write_file(ROOT_PATH . "cache/mysql_bak/" . $rand_dir . "/" . $filename, $show, 'a+');
//如果不指定每卷大小.将默认为1M
$baksize = $baksize ? $baksize : 1024;
//对文件做精确大小分卷处理
$step = cksize(ROOT_PATH . "cache/mysql_bak/" . $rand_dir . "/" . $filename, $step, 1024 * $baksize);
//如果还存在表时.继续,否则结束
if ($tabledb[$tableid]) {
foreach ($tabledb as $value) {
$Table .= "{$value}|";
}
//记录下来.防止中途备份失败
write_file(ROOT_PATH . "cache/bak_mysql.txt", "index.php?lfj={$lfj}&action=out&page={$page}&rowsnum={$rowsnum}&tableid={$tableid}&rand_dir={$rand_dir}&step={$step}&tabledbreto={$Table}&baksize={$baksize}");
echo "<CENTER>已备份 <font color=red>{$step}</font> 卷, 进度条 <font color=blue>{$page}</font> 当前正在备份数据库 <font color=red>{$tabledb[$tableid]}</font></CENTER>";
print <<<EOT
<form name="form1" method="post" action="index.php?lfj={$lfj}&action=out&page={$page}&rowsnum={$rowsnum}&tableid={$tableid}&rand_dir={$rand_dir}&step={$step}&baksize={$baksize}">
<input type="hidden" name="tabledbreto" value="{$Table}">
</form>
<SCRIPT LANGUAGE="JavaScript">
<!--
function autosub(){
\tdocument.form1.submit();
}
autosub();
//-->
</SCRIPT>
EOT;
//echo "<META HTTP-EQUIV=REFRESH CONTENT='0;URL=index.php?lfj=$lfj&action=out&page=$page&rowsnum=$rowsnum&tableid=$tableid&rand_dir=$rand_dir&step=$step&tabledbreto=$Table&baksize=$baksize'>";
exit;
} else {
$dir = opendir(ROOT_PATH . "cache/mysql_bak/{$rand_dir}");
while ($file = readdir($dir)) {
if (eregi('.sql$', $file)) {
$totalsize += $sqlfilesize = @filesize(ROOT_PATH . "cache/mysql_bak/{$rand_dir}/{$file}");
$rs[sqlsize][] = number_format($sqlfilesize / 1024, 3);
}
}
$totalsize = number_format($totalsize / 1048576, 3);
@unlink(ROOT_PATH . "cache/bak_mysql.txt");
$rs[totalsize] = $totalsize;
$rs[timedir] = $rand_dir;
if (!@is_writable(ROOT_PATH . "cache/mysql_bak/{$rand_dir}/0.sql")) {
showmsg("备份失败，请在cache/mysql_bak/目录下创建一个目录mysql然后改其属性为0777,如果此目录已存在，请删除他，重新创建，并改属性为0777");
}
return $rs;
}
}
