Question

我正在尝试使用http://www.a2zwebhelp.com/php-script-to-import-mysql-database中的以下代码恢复数据库但我收到＆＃34;错误：查询是空的＆＃34; 我哪里错了？

P.S。从phpmyadmin导入sql文件可以达到目的但不能使用它。

<?php
include 'connect.php';
$filename = 'DB_Backups/db-backup-08-04-14-08-39-16.sql';
$templine = '';
$lines = file($filename); //Read entire file
foreach($lines as $line){
    if(substr($line, 0, 2) == '--' || $line == '') //Skip all comments
        $templine.=$line;
    if(substr(trim($line), -1, 1) == ';'){
        mysql_query($templine) or print('Error: '.mysql_error().'<br>');
    $templine = '';
    }
}
?>

Answer 1

嗯，首先，这部分代码不会跳过评论，它会将它们添加到您的$templine：

    if(substr($line, 0, 2) == '--' || $line == '') //Skip all comments
        $templine.=$line;

其次，在这里，您尝试使用上面指定的$templine执行查询（如果已分配，或以其他方式''），您实际上想要使用$line执行查询：< / p>

    if(substr(trim($line), -1, 1) == ';'){
        mysql_query($templine) or print('Error: '.mysql_error().'<br>');

所以，基本上这应该会有所改善：

foreach($lines as $line){
    if(substr($line, 0, 2) == '--' || $line == '') //Skip all comments
        continue;
    if(substr(trim($line), -1, 1) == ';'){
        mysql_query(trim($line)) or print('Error: '.mysql_error().'in ' . $line . '<br>');
    }
}

Answer 2

略有改进并且有效:) @ favoretti谢谢您的提示。

<?php
// Name of the file
$filename = 'DB_Backups/'.$name;


// Temporary variable, used to store current query
$templine = '';
// Read in entire file
$lines = file($filename);
// Loop through each line
foreach ($lines as $line)
{
    // Skip it if it's a comment
    if (substr($line, 0, 2) == '--' || $line == '')
        continue;

    // Add this line to the current segment
    $templine .= $line;
    // If it has a semicolon at the end, it's the end of the query
    if (substr(trim($line), -1, 1) == ';')
    {
    // Perform the query
    mysql_query($templine) or print('Error performing query \'<strong>' . $templine . '\': ' . mysql_error() . '<br /><br />');
    // Reset temp variable to empty
    $templine = '';
    }
}

?>

恢复mysql数据库会产生错误

2 个答案: