To export database use
function export_tables($host,$user,$pass,$name, $tables=false, $backup_name=false )
{
$link = mysqli_connect($host,$user,$pass,$name);
// Check connection
if (mysqli_connect_errno()) { echo "Failed to connect to MySQL: " . mysqli_connect_error(); }
mysqli_select_db($link,$name);
mysqli_query($link,"SET NAMES 'utf8'");
//get all of the tables
if($tables === false)
{
$tables = array();
$result = mysqli_query($link,'SHOW TABLES');
while($row = mysqli_fetch_row($result))
{
$tables[] = $row[0];
}
}
else
{
$tables = is_array($tables) ? $tables : explode(',',$tables);
}
$return='';
//cycle through
foreach($tables as $table)
{
$result = mysqli_query($link,'SELECT * FROM '.$table);
$num_fields = mysqli_num_fields($result);
$row2 = mysqli_fetch_row(mysqli_query($link, 'SHOW CREATE TABLE '.$table));
$return.= "\n\n".$row2[1].";\n\n";
for ($i = 0; $i < $num_fields; $i++)
{
$st_counter= 0;
while($row = mysqli_fetch_row($result))
{
//create new command if when starts and after 100 command cycle
if ($st_counter%100 == 0 || $st_counter == 0 ) {
$return.= "\nINSERT INTO ".$table." VALUES";
}
$return.="\n(";
for($j=0; $j<$num_fields; $j++)
{
$row[$j] = addslashes($row[$j]);
$row[$j] = str_replace("\n","\\n",$row[$j]);
if (isset($row[$j])) { $return.= '"'.$row[$j].'"' ; } else { $return.= '""'; }
if ($j<($num_fields-1)) { $return.= ','; }
}
$return.=")";
//create new command if when starts and after 100 command cycle (but detect this 1 cycle earlier !)
if ( ($st_counter+1)%100 == 0 && $st_counter != 0 ) { $return.= ";"; }
else { $return.= ","; }
//+++++++
$st_counter = $st_counter +1 ;
}
//as we cant detect WHILE loop end, so, just detect, if last command ends with comma(,) then replace it with semicolon(;)
if (substr($return, -1) == ',') {$return = substr($return, 0, -1). ';'; }
}
$return.="\n\n\n";
}
//save file
$backup_name = $backup_name ? $backup_name : $name."___(".date('H-i-s')."_".date('d-m-Y').")__rand".rand(1,11111111).'.sql';
file_put_contents($backup_name,$return);
die('SUCCESS. Download BACKUP file: <a target="_blank" href="'.$backup_name.'">'.$backup_name.'</a> <br/><br/>After download, <a target="_blank" href="?delete_filee='.$backup_name.'">Delete it!</a> ');
}
if (!empty($_GET['delete_filee'])){ chdir(dirname(__file__));
if (unlink($_GET['delete_filee'])) {die('file_deleted');}
else {die("file doesnt exist");}
}
and execute using
export_tables("localhost","username","password","db_name");
to import data base use
function import_tables($host,$user,$pass,$dbname,$sql_file, $clear_or_not=false )
{
if (!file_exists($sql_file)) {
die('Input the SQL filename correctly! <button onclick="window.history.back();">Click Back</button>');}
// Connect to MySQL server
//$link = mysqli_connect($host,$user,$pass,$name);
//mysqli_select_db($link,$mysqli);
$mysqli = new mysqli($host, $user, $pass, $dbname);
// Check connection
if (mysqli_connect_errno()) { echo "Failed to connect to MySQL: " . mysqli_connect_error(); }
if($clear_or_not)
{
$zzzzzz = $mysqli->query('SET foreign_key_checks = 0');
if ($result = $mysqli->query("SHOW TABLES"))
{
while($row = $result->fetch_array(MYSQLI_NUM))
{
$mysqli->query('DROP TABLE IF EXISTS '.$row[0]);
}
}
$zzzzzz = $mysqli->query('SET foreign_key_checks = 1');
}
$mysqli->query("SET NAMES 'utf8'");
// Temporary variable, used to store current query
$templine = '';
// Read in entire file
$lines = file($sql_file);
// Loop through each line
foreach ($lines as $line)
{
// Skip it if it's a comment
if (substr($line, 0, 2) == '--' || $line == '')
continue;
// Add this line to the current segment
$templine .= $line;
// If it has a semicolon at the end, it's the end of the query
if (substr(trim($line), -1, 1) == ';')
{
// Perform the query
$mysqli->query($templine) or print('Error performing query \'<strong>' . $templine . '\': ' . $mysqli->error . '<br /><br />');
// Reset temp variable to empty
$templine = '';
}
}
echo 'Tables imported successfully. <button onclick="window.history.back();">Go Back</button>';
}
and to execute it use:
import_tables("localhost","username","pasword","db_name","my_filename.sql", true); //this will delete all exiting tables, and writes the imported database
import_tables("localhost","username","pasword","db_name","my_filename.sql", false); //dont delete the exiting tables, just add those, which doesnt exist
Source:
