<?php
  /**
  *  
  *  @name php備份數(shù)據(jù)庫(kù) 
  *  @param string  $DbHost    連接主機(jī)
  *  @param string  $DbUser    用戶名
  *  @param string  $DbPwd    連接密碼
  *  @param string  $DbName    要備份的數(shù)據(jù)庫(kù)
  *  @param string  $saveFileName 要保存的文件名, 默認(rèn)文件保存在當(dāng)前文件夾中,以日期作區(qū)分
  *  @return Null
  *  @example backupMySqlData('localhost', 'root', '123456', 'YourDbName');
  *
  */
  function backupMySqlData($DbHost, $DbUser, $DbPwd, $DbName, $saveFileName = '')
  {
    header("Content-type:text/html;charset=utf-8");
    error_reporting(0);
    set_time_limit(0);

    echo '數(shù)據(jù)備份中，請(qǐng)稍候......<br />';

    $link = mysql_connect($DbHost, $DbUser, $DbPwd) or die('數(shù)據(jù)庫(kù)連接失敗: ' . mysql_error());
    mysql_select_db($DbName) or die('數(shù)據(jù)庫(kù)連接失敗: ' . mysql_error());
    mysql_query('set names utf8');
    
    // 聲明變量
    $isDropInfo   = '';
    $insertSQL   = '';
    $row      = array();
    $tables     = array();
    $tableStructure = array();
    $fileName    = ($saveFileName ? $saveFileName : 'MySQL_data_bakeup_') . date('YmdHis') . '.sql';

    // 枚舉該數(shù)據(jù)庫(kù)所有的表
    $res = mysql_query("SHOW TABLES FROM $DbName");
    while ($row = mysql_fetch_row($res)) {

      $tables[] = $row[0];

    }
    mysql_free_result($res);

    // 枚舉所有表的創(chuàng)建語(yǔ)句
    foreach ($tables as $val) {

      $res = mysql_query("show create table $val", $link);
      $row = mysql_fetch_row($res);

      $isDropInfo   = "DROP TABLE IF EXISTS `" . $val . "`;\r\n";
      $tableStructure = $isDropInfo . $row[1] . ";\r\n";

      file_put_contents($fileName, $tableStructure, FILE_APPEND);
      mysql_free_result($res);
    }

    // 枚舉所有表的INSERT語(yǔ)句
    foreach ($tables as $val) {

      $res = mysql_query("select * from $val");

      // 沒(méi)有數(shù)據(jù)的表不執(zhí)行insert
      while ($row = mysql_fetch_row($res)) {

        $sqlStr = "INSERT INTO `".$val."` VALUES (";

        foreach($row as $v){

          $sqlStr .= "'$v',";

        }
        //去掉最后一個(gè)逗號(hào)
        $sqlStr = substr($sqlStr, 0, strlen($sqlStr) - 1);
        $sqlStr .= ");\r\n";

        file_put_contents($fileName, $sqlStr, FILE_APPEND);
      }
      mysql_free_result($res);
    }

    echo '數(shù)據(jù)備份成功！';
  }
　　 // 調(diào)用此方法 
  backupMySqlData('localhost', 'root', '123456', 'YouDbName');  
?>