PHPデータベースを使用してSQLデータベースをバックアップしますが、空白のSQLファイルを保存します

Question

これは私のデータベースをバックアップするコードですが、現在は動作していますが、空のSQLファイルです。誰も私にこれについて助けることができますか？そして、私はmysqlidumpまたはmysqldumpをどのように使用するのですか？

<?php 
$cookie_name = "abc"; 
$cookie_value = "nk"; 
setcookie($cookie_name, $cookie_value, time() + (86400 * 30), "/"); // 86400 = 1 day 

define("BACKUP_PATH","C:/wamp64/www/db/dbbackup/"); 

$dump_path = "db/dbbackup/"; 
$dbhost = "localhost"; 
$username = "root"; 
$password = ""; 
$dbname = "trust"; 
$date_string = date('Ymd'); 
$user_id = $_COOKIE["abc"]; 
$command = "mysqldump --routines -h {$dbhost} -u {$username} {$dbname} >". BACKUP_PATH ."{$date_string}_{$dbname}.sql"; 
system($command); 

echo "<script> alert('backup saved'); window.location.href='setting.php?id=".$user_id."' </script>";?> 

Answer 1

ちょうどあなたdatabase name , host,password etc

構文

EXPORT_TABLES("localhost","user","pass","db_name"); 

コードを追加し、このコード

を試してみてください。

<?php 

function EXPORT_TABLES($host,$user,$pass,$name,$tables=false, $backup_name=false){ 
    set_time_limit(3000); $mysqli = new mysqli($host,$user,$pass,$name); $mysqli->select_db($name); $mysqli->query("SET NAMES 'utf8'"); 
    $queryTables = $mysqli->query('SHOW TABLES'); while($row = $queryTables->fetch_row()) { $target_tables[] = $row[0]; } if($tables !== false) { $target_tables = array_intersect($target_tables, $tables); } 
    $content = "SET SQL_MODE = \"NO_AUTO_VALUE_ON_ZERO\";\r\nSET time_zone = \"+00:00\";\r\n\r\n\r\n/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;\r\n/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;\r\n/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;\r\n/*!40101 SET NAMES utf8 */;\r\n--\r\n-- Database: `".$name."`\r\n--\r\n\r\n\r\n"; 
    foreach($target_tables as $table){ 
     if (empty($table)){ continue; } 
     $result = $mysqli->query('SELECT * FROM `'.$table.'`');  $fields_amount=$result->field_count; $rows_num=$mysqli->affected_rows;  $res = $mysqli->query('SHOW CREATE TABLE '.$table); $TableMLine=$res->fetch_row(); 
     $content .= "\n\n".$TableMLine[1].";\n\n"; 
     for ($i = 0, $st_counter = 0; $i < $fields_amount; $i++, $st_counter=0) { 
      while($row = $result->fetch_row()) { //when started (and every after 100 command cycle): 
       if ($st_counter%100 == 0 || $st_counter == 0) {$content .= "\nINSERT INTO ".$table." VALUES";} 
        $content .= "\n("; for($j=0; $j<$fields_amount; $j++){ $row[$j] = str_replace("\n","\\n", addslashes($row[$j])); if (isset($row[$j])){$content .= '"'.$row[$j].'"' ;} else{$content .= '""';}  if ($j<($fields_amount-1)){$content.= ',';} }  $content .=")"; 
       //every after 100 command cycle [or at last line] ....p.s. but should be inserted 1 cycle eariler 
       if ((($st_counter+1)%100==0 && $st_counter!=0) || $st_counter+1==$rows_num) {$content .= ";";} else {$content .= ",";} $st_counter=$st_counter+1; 
      } 
     } $content .="\n\n\n"; 
    } 
    $content .= "\r\n\r\n/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;\r\n/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;\r\n/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;"; 
    $backup_name = $backup_name ? $backup_name : $name."___(".date('H-i-s')."_".date('d-m-Y').")__rand".rand(1,11111111).".sql"; 
    ob_get_clean(); header('Content-Type: application/octet-stream'); header("Content-Transfer-Encoding: Binary"); header("Content-disposition: attachment; filename=\"".$backup_name."\""); 
    echo $content; exit; 
}  //see import.php too 
?> 

を