Restoring mysql database gives errors

Question

I am trying to restore a database using the following code from http://www.a2zwebhelp.com/php-script-to-import-mysql-database But i am receiving "Error: Query was empty" Where am i going wrong?

Ps importing the sql file from phpmyadmin serves the purpose but doesnt work using this.

<?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

Well, for one, this part of code doesn't skip comments, it literally adds them to your $templine :

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

Secondly, here you try to execute query with $templine assigned above (if it ever was assigned, or otherwise '' ), where you actually want to execute query with $line :

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

So, basically this should work somewhat better:

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

A slight improvement and it works :) @ favoretti thank you for the hint.

<?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 = '';
    }
}

?>