PHP/ MySQL Database Backup Script Not Working Correctly - mysql

Question

This is my script:
<?php
ini_set('display_errors',1);
ini_set('display_startup_errors',1);
error_reporting(-1);
backup_tables('localhost','xxxxx','xxxxx','xxxxx');
/* backup the db OR just a table */
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";
}
$backup_file = $_SERVER['DOCUMENT_ROOT'] . '/scripts_and_crons/fr_internetlead-'.time().'.sql';
//save file
$handle = fopen($backup_file,'w+');
fwrite($handle,$return);
fclose($handle);
}
//define the receiver of the email
$to = 'email#domain.com';
//define the subject of the email
$subject = 'Test email with attachment';
//create a boundary string. It must be unique
//so we use the MD5 algorithm to generate a random hash
$random_hash = md5(date('r', time()));
//define the headers we want passed. Note that they are separated with \r\n
$headers = "From: backups#domain.com\r\nReply-To: noreply#domain.com";
//add boundary string and mime type specification
$headers .= "\r\nContent-Type: multipart/mixed; boundary=\"PHP-mixed-".$random_hash."\"";
//read the atachment file contents into a string,
//encode it with MIME base64,
//and split it into smaller chunks
$attachment = chunk_split(base64_encode(file_get_contents($backup_file)));
//define the body of the message.
ob_start(); //Turn on output buffering
?>
--PHP-mixed-<?php echo $random_hash; ?>
Content-Type: multipart/alternative; boundary="PHP-alt-<?php echo $random_hash; ?>"
--PHP-alt-<?php echo $random_hash; ?>
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Hello World!!!
This is simple text email message.
--PHP-alt-<?php echo $random_hash; ?>
Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
<h2>Hello World!</h2>
<p>This is something with <b>HTML</b> formatting.</p>
--PHP-alt-<?php echo $random_hash; ?>--
--PHP-mixed-<?php echo $random_hash; ?>
Content-Type: application/sql; name="<?php echo $backup_file; ?>"
Content-Transfer-Encoding: base64
Content-Disposition: attachment
<?php echo $attachment; ?>
--PHP-mixed-<?php echo $random_hash; ?>--
<?php
//copy current buffer contents into $message variable and delete current output buffer
$message = ob_get_clean();
//send the email
$mail_sent = #mail($to, $subject, $message, $headers);
//if the message is sent successfully print "Mail sent". Otherwise print "Mail failed"
echo $mail_sent ? "Mail sent" : "Mail failed";
?>
The only debugging info I get in php are
Notice: Undefined variable: return in /var/www/vhosts/domain.com/httpdocs/scripts_and_crons/internetlead_backup.php on line 38
and
Deprecated: Function ereg_replace() is deprecated in /var/www/vhosts/domain.com/httpdocs/scripts_and_crons/internetlead_backup.php on line 50 x infinity
The only attachment I receive in the email is ATT00001.
echo '<pre>';
echo $return;
echo '</pre>';
Prints out the correct data.
Even doing
echo '<pre>';
echo file_get_contents($backup_file);
echo '</pre>';
Prints out the correct data so the file is being written to but for some reason the script fails at attaching it to the email.
Can't see what could be wrong, any ideas?
Martin
UPDATE
Found the answer in another SO question - PHP mail() attachment problems
That is the correct way to do it.

Answer 1

If your php version is higher than 5.2 you should replace ereg_replace with preg_match and change (“ parts as (“/