Question

我正在尝试使用php备份mysql数据库。我尝试了下面的代码：

    <?php
   $dbhost = 'my_host';
   $dbuser = 'my_user';
   $dbpass = 'my_pass';
   $db = 'my_dbname';

   $conn = mysql_connect($dbhost, $dbuser, $dbpass, $db);

   if(! $conn ) {
      die('Could not connect: ' . mysql_error());
   }

   $table_name = "my_table";
   $backup_file  = "/tmp/my_table.sql";
   $sql = "SELECT * INTO OUTFILE '$backup_file' FROM $table_name";

   mysql_select_db($db);
   $retval = mysql_query( $sql, $conn );

   if(! $retval ) {
      die('Could not take data backup: ' . mysql_error());
   }

   echo "Backedup  data successfully\n";

   mysql_close($conn);
?>

但是我收到了这个错误：

＆＃34;无法进行数据备份：用户访问被拒绝＆＃39; my_user＆＃39; @＆＃39;％＆＃39; （使用密码：是）＆＃34;

你能帮助我吗？谢谢！

Answer 1

尝试

<?php
$dbhost = 'my_host';
$dbuser = 'my_user';
$dbpass = 'my_pass';
$db = 'my_dbname';

$conn = mysql_connect($dbhost, $dbuser, $dbpass, $db);

if(! $conn ) {
  die('Could not connect: ' . mysql_error());
}

$table_name = "my_table";
$backup_file  = "/tmp/my_table.sql";
$sql = "SELECT * INTO OUTFILE '$backup_file' FROM $table_name";

// set current db with connection resource
mysql_select_db(db, $conn);

$retval = mysql_query( $sql, $conn );

if(! $retval ) {
  die('Could not take data backup: ' . mysql_error());
}

echo "Backedup  data successfully\n";

mysql_close($conn);

Mysql错误＆＃34;用户拒绝访问＆＃34;

1 个答案: