文件未寫入mySQL備份CRON

Question

我正在嘗試進行MySQL數據庫備份並保存.sql文件。 該實用程序似乎處理得很好，但是在寫入文件時。 什么都沒發生。 不知道出什么問題了嗎？ 路徑或代碼

public function mysql_backup()
{

// Load the DB utility class
$this->load->dbutil();

$date = new DateTime();
$time = $date->format('Y-m-d_H-i-s');

// Backup your entire database and assign it to a variable
$prefs = array(
                'tables'      => array(),  // Array of tables to backup.
                'ignore'      => array(),           // List of tables to omit from the backup
                'format'      => 'txt',             // gzip, zip, txt
                'filename'    => 'sql_backup_'.$time.'.sql',    // File name - NEEDED ONLY WITH ZIP FILES
                'add_drop'    => TRUE,              // Whether to add DROP TABLE statements to backup file
                'add_insert'  => TRUE,              // Whether to add INSERT data to backup file
                'newline'     => "\n"               // Newline character used in backup file
              );

$backup = $this->dbutil->backup($prefs); 

// Load the file helper and write the file to your server
write_file('./backup/sql_backup_'.$time.'.sql', $backup);

    echo '<h2>Cron Successfully Runned.</h2>'; 

    }

Answer 1

在我看來，您好像沒有加載file助手。 嘗試添加$this->load->helper('file'); 在代碼之前

public function mysql_backup()
{

// Load the DB utility class
$this->load->helper('file');
$this->load->dbutil();

$date = new DateTime();
$time = $date->format('Y-m-d_H-i-s');

// Backup your entire database and assign it to a variable
$prefs = array(
                'tables'      => array(),  // Array of tables to backup.
                'ignore'      => array(),           // List of tables to omit from the backup
                'format'      => 'txt',             // gzip, zip, txt
                'filename'    => 'sql_backup_'.$time.'.sql',    // File name - NEEDED ONLY WITH ZIP FILES
                'add_drop'    => TRUE,              // Whether to add DROP TABLE statements to backup file
                'add_insert'  => TRUE,              // Whether to add INSERT data to backup file
                'newline'     => "\n"               // Newline character used in backup file
              );

$backup = $this->dbutil->backup($prefs); 

// Load the file helper and write the file to your server
write_file('./backup/sql_backup_'.$time.'.sql', $backup);

    echo '<h2>Cron Successfully Runned.</h2>'; 

    }