67dcb2f77c
brought over all the files from the Jekyll version, fixed categories, reformatted for different markdown processor
126 lines
4.4 KiB
Markdown
126 lines
4.4 KiB
Markdown
---
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layout: post
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title: A Handy PHP Backup Script
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author: Daniel
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date: 2008-03-28 23:06:37
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categories:
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- [ Databases, MySQL ]
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- [ Databases, PostgreSQL ]
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- [ Programming, PHP ]
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tags:
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- backup
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- database
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- php
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- script
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summary: A PHP script to create a zip archive and e-mail it
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---
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I found a script over on the Lunarpages Forums about [using PHP to back up your site][forum]. I have taken it, modified it a little, beefed up the documentation a lot, and am now posting it here. You can copy and paste it from below to customize it for your own use.
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{% codeblock backup.php lang:php %}
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<?php
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/**
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* Generic Backup Script.
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*
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* To configure this script for your purposes, just edit the parameters below.
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* Once you have the parameters set properly, when the script executes, it will
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* create an archive file, gzip it, and e-mail it to the address specified. It
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* can be executed through cron with the command
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*
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* php -q [name of script]
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*
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* You are free to use this, modify it, copy it, etc. However, neither DJS
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* Consulting nor Daniel J. Summers assume any responsibility for good or bad
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* things that happen when modifications of this script are run.
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*
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* @author Daniel J. Summers <daniel@djs-consulting.com>
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*/
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// --- SCRIPT PARAMETERS ---
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/* -- File Name --
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This is the name of the file that you're backing up, and should contain no
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slashes. For example, if you're backing up a database, this might look
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something like...
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$sFilename = "backup-my_database_name-" . date("Y-m-d") . ".sql"; */
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$sFilename = "backup-[whatever-it-is]-" . date("Y-m-d") . ".[extension]";
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/* -- E-mail Address --
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This is the e-mail address to which the message will be sent. */
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$sEmailAddress = "[your e-mail address]";
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/* -- E-mail Subject --
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This is the subject that will be on the e-mail you receive. */
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$sEmailSubject = "[something meaningful]";
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/* -- E-mail Message --
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This is the text of the message that will be sent. */
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$sMessage = "Compressed database backup file $sFilename.gz attached.";
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/* -- Backup Command --
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This is the command that does the work.
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A note on the database commands - your setup likely requires a password
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for these commands, and they each allow you to pass a password on the
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command line. However, this is very insecure, as anyone who runs "ps" can
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see your password! For MySQL, you can create a ~/.my.cnf file - it is
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detailed at //dev.mysql.com/doc/refman/4.1/en/password-security.html .
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For PostgreSQL, the file is ~/.pgpass, and it is detailed at
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//www.postgresql.org/docs/8.0/interactive/libpq-pgpass.html . Both of
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these files should be chmod-ded to 600, so that they can only be viewed by
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you, the creator.
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That being said, some common commands are...
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- Backing Up a MySQL Database
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$sBackupCommand = "mysqldump -u [user_name] [db_name] > $sFilename";
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- Backing Up a PostgreSQL Database
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$sBackupCommand = "pg_dump [db_name] -h localhost -U [user_name] -d -O > $sFilename";
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- Backing Up a set of files (tar and gzip)
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$sBackupCommand = "tar cvf $sFilename [directory]
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Whatever command you use, this script appends .gz to the filename after the command is executed. */
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$sBackupCommand = "[a backup command]";
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// --- END OF SCRIPT PARAMETERS ---
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//
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// Edit below at your own risk. :)
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// Do the backup.
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$sResult = passthru($sBackupCommand . "; gzip $sFilename");
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$sFilename .= ".gz";
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// Create the message.
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$sMessage = "Compressed database backup file $sFilename attached.";
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$sMimeBoundary = "<<<:" . md5(time());
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$sData = chunk_split(base64_encode(implode("", file($sFilename))));
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$sHeaders = "From: $sEmailAddress\r\n"
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. "MIME-Version: 1.0\r\n"
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. "Content-type: multipart/mixed;\r\n"
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. " boundary=\"$sMimeBoundary\"\r\n";
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$sContent = "This is a multi-part message in MIME format.\r\n\r\n"
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. "--$sMimeBoundary\r\n"
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. "Content-Type: text/plain; charset=\"iso-8859-1\"\r\n"
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. "Content-Transfer-Encoding: 7bit\r\n\r\n"
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. $sMessage."\r\n"
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. "--$sMimeBoundary\r\n"
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. "Content-Disposition: attachment;\r\n"
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. "Content-Type: Application/Octet-Stream; name=\"$sFilename\"\r\n"
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. "Content-Transfer-Encoding: base64\r\n\r\n"
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. $sData."\r\n"
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. "--$sMimeBoundary\r\n";
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// Send the message.
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mail($sEmailAddress, $sEmailSubject, $sContent, $sHeaders);
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// Delete the file - we don't need it any more.
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unlink($sFilename);
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{% endcodeblock %}
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[forum]: //www.lunarforums.com/lunarpages_how_tos/site_and_mysql_backups_via_cron-t22118.0.html "Site and MySQL backups via cron - Lunarforums"
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