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Change to use a temp file... Hopefully reduce memory usage on backup.

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git-svn-id: file:///svn/phpbb/trunk@1375 89ea8834-ac86-4346-8a33-228a782c2dd0
This commit is contained in:
the_systech 2001-11-19 19:39:00 +00:00
parent ffe885d4e5
commit 1598af6afd
1 changed files with 31 additions and 7 deletions
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38
phpBB/admin/admin_db_utilities.php
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@ -630,9 +630,10 @@ function get_table_content_mysql($table, $handler)
function output_table_content($content) function output_table_content($content)
{ {
global $backup_sql; global $tempfile;
$backup_sql .= $content . "\n"; fwrite($tempfile, $content . "\n");
//$backup_sql .= $content . "\n";
return; return;
} }
@ -775,7 +776,19 @@ if( isset($HTTP_GET_VARS['perform']) || isset($HTTP_POST_VARS['perform']) )
{ {
$backup_sql = "\n" . pg_get_sequences("\n", $backup_type); $backup_sql = "\n" . pg_get_sequences("\n", $backup_type);
} }
//
// Ok to save on some memory we're going to try writing all this stuff
// to a tmpfile and sending it later...
//
$tempfile = tmpfile();
if(!$tempfile)
{
//
// Temp file creation failed... Do something here..
//
exit;
}
fwrite($tempfile, $backup_sql);
for($i = 0; $i < count($tables); $i++) for($i = 0; $i < count($tables); $i++)
{ {
$table_name = $tables[$i]; $table_name = $tables[$i];
@ -784,8 +797,8 @@ if( isset($HTTP_GET_VARS['perform']) || isset($HTTP_POST_VARS['perform']) )
if($backup_type != 'data') if($backup_type != 'data')
{ {
$backup_sql .= "#\n# TABLE: " . $table_prefix . $table_name . "\n#\n"; fwrite($tempfile, "#\n# TABLE: " . $table_prefix . $table_name . "\n#\n");
$backup_sql .= $table_def_function($table_prefix . $table_name, "\n") . "\n"; fwrite($tempfile, $table_def_function($table_prefix . $table_name, "\n") . "\n");
} }
if($backup_type != 'structure') if($backup_type != 'structure')
@ -793,6 +806,15 @@ if( isset($HTTP_GET_VARS['perform']) || isset($HTTP_POST_VARS['perform']) )
$table_content_function($table_prefix . $table_name, "output_table_content"); $table_content_function($table_prefix . $table_name, "output_table_content");
} }
} }
//
// Flush all output to the temp file and get it's size, then rewind the
// pointer to the beginning.
//
fflush($tempfile);
$temp_size = ftell($tempfile) + 1;
rewind($tempfile);
// //
// move forward with sending the file across... // move forward with sending the file across...
@ -818,14 +840,16 @@ if( isset($HTTP_GET_VARS['perform']) || isset($HTTP_POST_VARS['perform']) )
header("Content-Type: text/x-delimtext; name=\"phpbb_db_backup.sql.gz\""); header("Content-Type: text/x-delimtext; name=\"phpbb_db_backup.sql.gz\"");
header("Content-disposition: attachment; filename=phpbb_db_backup.sql.gz"); header("Content-disposition: attachment; filename=phpbb_db_backup.sql.gz");
echo gzencode($backup_sql); //echo gzencode($backup_sql);
echo gzencode(fread($tempfile, $temp_size));
} }
else else
{ {
header("Content-Type: text/x-delimtext; name=\"phpbb_db_backup.sql\""); header("Content-Type: text/x-delimtext; name=\"phpbb_db_backup.sql\"");
header("Content-disposition: attachment; filename=phpbb_db_backup.sql"); header("Content-disposition: attachment; filename=phpbb_db_backup.sql");
echo $backup_sql; //echo $backup_sql;
echo fread($tempfile, $temp_size);
} }
exit; exit;