将mysql表导出为SQL格式？ [英] Export mysql table into SQL format?

问题描述

是否可以通过PHP代码将包含其记录的表导出为sql格式？

Is it possible to export a table with its records into sql format via php code ? I've been looking around and all i found is exporting it as csv file.

但我发现下面的代码：

backup_tables('localhost','root','','compare_db');
function backup_tables($host,$user,$pass,$name,$tables = '*')
{

    $link = mysql_connect($host,$user,$pass);
    mysql_select_db($name,$link);

    //get all of the tables
    if($tables == '*')
    {
        $tables = array();
        $result = mysql_query('SHOW TABLES');
        while($row = mysql_fetch_row($result))
        {
            $tables[] = $row[0];
        }
    }
    else
    {
        $tables = is_array($tables) ? $tables : explode(',',$tables);
    }

    //cycle through
    foreach($tables as $table)
    {
        $result = mysql_query('SELECT * FROM '.$table);
        $num_fields = mysql_num_fields($result);

        $return.= 'DROP TABLE '.$table.';';
        $row2 = mysql_fetch_row(mysql_query('SHOW CREATE TABLE '.$table));
        $return.= "\n\n".$row2[1].";\n\n";

        for ($i = 0; $i < $num_fields; $i++) 
        {
            while($row = mysql_fetch_row($result))
            {
                $return.= 'INSERT INTO '.$table.' VALUES(';
                for($j=0; $j<$num_fields; $j++) 
                {
                    $row[$j] = addslashes($row[$j]);
                    $row[$j] = ereg_replace("\n","\\n",$row[$j]);
                    if (isset($row[$j])) { $return.= '"'.$row[$j].'"' ; } else { $return.= '""'; }
                    if ($j<($num_fields-1)) { $return.= ','; }
                }
                $return.= ");\n";
            }
        }
        $return.="\n\n\n";
    }

    //save file
    $handle = fopen('db-backup-'.time().'-'.(md5(implode(',',$tables))).'.sql','w+');
    fwrite($handle,$return);
    fclose($handle);
}

它会输出以下错误：

Notice: Undefined variable: return 

Deprecated: Function ereg_replace() is deprecated 

所有我想要的是通过PHP导出SINGLE表到.sql格式！...我不熟悉PHP，但希望你们帮助我！ p>

All I want is to export a SINGLE table via PHP into .sql format !....I'm not that familiar with PHP, but hope you guys help me out !

推荐答案

不要重新发明轮子。您所需要的已经存在的几乎是现成的：

Do not reinvent the wheel. What you need already exists almost out-of-the-box:

<?php
    $result = exec("/path/to/mysqldump -u$username -p$password your_database your_table > /desired/output/path/dump.sql");

您可能想检查 $ result afterwads，以确保一切顺利。

You may want to check the contents of $result afterwads, to make sure everything went smooth.

此处的参考手册。

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