/**
* Get affected tables
*
* @param string Table
* @return string
*/
function get_affected_tables($table)
{
global $DB;
$affected_tables = T_('Affected tables:') . ' ';
if (is_array($table)) {
$affected_tables .= implode(', ', aliases_to_tables($table));
} elseif ($table == '*') {
$tables = array();
foreach ($DB->get_results('SHOW TABLES', ARRAY_N) as $row) {
$tables[] = $row[0];
}
$affected_tables .= implode(', ', $tables);
} else {
$affected_tables .= aliases_to_tables($table);
}
return $affected_tables;
}
/**
* Backup database
*
* @param string backup directory path
*/
function backup_database($backup_dirpath)
{
global $DB, $db_config, $backup_tables, $inc_path;
echo '<h4>' . T_('Creating database backup...') . '</h4>';
evo_flush();
// Collect all included tables
$ready_to_backup = array();
foreach ($this->backup_tables as $name => $included) {
if ($included) {
$tables = aliases_to_tables($backup_tables[$name]['table']);
if (is_array($tables)) {
$ready_to_backup = array_merge($ready_to_backup, $tables);
} elseif ($tables == '*') {
foreach ($DB->get_results('SHOW TABLES', ARRAY_N) as $row) {
$ready_to_backup[] = $row[0];
}
} else {
$ready_to_backup[] = $tables;
}
}
}
// Ensure there are no duplicated tables
$ready_to_backup = array_unique($ready_to_backup);
// Exclude tables
foreach ($this->backup_tables as $name => $included) {
if (!$included) {
$tables = aliases_to_tables($backup_tables[$name]['table']);
if (is_array($tables)) {
$ready_to_backup = array_diff($ready_to_backup, $tables);
} elseif ($tables != '*') {
$index = array_search($tables, $ready_to_backup);
if ($index) {
unset($ready_to_backup[$index]);
}
}
}
}
// Create and save created SQL backup script
$backup_sql_filename = 'db.sql';
$backup_sql_filepath = $backup_dirpath . $backup_sql_filename;
// Check if backup file exists
if (file_exists($backup_sql_filepath)) {
// Stop tables backup, because backup file exists
echo '<p style="color:red">' . sprintf(T_('Unable to write database dump. Database dump already exists: «%s»'), $backup_sql_filepath) . '</p>';
evo_flush();
return false;
}
$f = @fopen($backup_sql_filepath, 'w+');
if ($f == false) {
// Stop backup, because it can't open backup file for writing
echo '<p style="color:red">' . sprintf(T_('Unable to write database dump. Could not open «%s» for writing.'), $backup_sql_filepath) . '</p>';
evo_flush();
return false;
}
echo sprintf(T_('Dumping tables to «<strong>%s</strong>»...'), $backup_sql_filepath) . '<br/>';
evo_flush();
// Create and save created SQL backup script
foreach ($ready_to_backup as $table) {
// progressive display of what backup is doing
echo sprintf(T_('Backing up table «<strong>%s</strong>» ...'), $table);
evo_flush();
$row_table_data = $DB->get_row('SHOW CREATE TABLE ' . $table, ARRAY_N);
fwrite($f, $row_table_data[1] . ";\n\n");
$values_list = array();
foreach ($DB->get_results('SELECT * FROM ' . $table, ARRAY_N) as $row) {
$values = '(';
$num_fields = count($row);
for ($index = 0; $index < $num_fields; $index++) {
if (isset($row[$index])) {
$row[$index] = str_replace("\n", "\\n", addslashes($row[$index]));
$values .= '\'' . $row[$index] . '\'';
} else {
// The $row[$index] value is not set or is NULL
$values .= 'NULL';
}
if ($index < $num_fields - 1) {
$values .= ',';
}
}
$values_list[] = $values . ')';
}
if (!empty($values_list)) {
fwrite($f, 'INSERT INTO ' . $table . ' VALUES ' . implode(',', $values_list) . ";\n\n");
}
unset($values_list);
// Flush the output to a file
if (fflush($f)) {
echo ' OK.';
}
echo '<br />';
evo_flush();
}
// Close backup file input stream
fclose($f);
if ($this->pack_backup_files) {
// Pack created backup SQL script
// Pack using 'zlib' extension and PclZip wrapper
// Load PclZip class (PHP4):
load_class('_ext/pclzip/pclzip.lib.php', 'PclZip');
$zip_filepath = $backup_dirpath . 'db.zip';
$PclZip = new PclZip($zip_filepath);
$file_list = $PclZip->add($backup_dirpath . $backup_sql_filename, PCLZIP_OPT_REMOVE_PATH, no_trailing_slash($backup_dirpath));
if ($file_list == 0) {
echo '<p style="color:red">' . sprintf(T_('Unable to create «%s»'), $zip_filepath) . '</p>';
evo_flush();
return false;
}
unlink($backup_sql_filepath);
}
return true;
}
