PowerShell Scripting to Replicate WordPress Data to MySQL

The CData Cmdlets for WordPress offer live access to WordPress data from within PowerShell. Using PowerShell scripts, you can easily automate regular tasks like data replication. This article will walk through using the CData Cmdlets for WordPress and the CData Cmdlets for MySQL in PowerShell to replicate WordPress data to a MySQL database.

After obtaining the needed connection properties, accessing WordPress data in PowerShell and preparing for replication consists of four basic steps.

To connect to WordPress, set the URL property and other authentication properties. WordPress supports Basic (User and Password) and OAuth2.0 authentication, though Basic is recommended for a testing environment only. To connect with OAuth you will need to register an app with WordPress.

See the Getting Started guide in the CData driver documentation for more information.

Collecting WordPress Data

1. Install the module:

   Install-Module WordPressCmdlets

2. Connect to WordPress:

   $wordpress = Connect-WordPress -Url $Url

3. Retrieve the data from a specific resource:

   $data = Select-WordPress -Connection $wordpress -Table "Categories"

   You can also use the Invoke-WordPress cmdlet to execute pure SQL-92 statements:

   $data = Invoke-WordPress -Connection $wordpress -Query 'SELECT * FROM Categories WHERE Id = @Id' -Params @{'@Id'='1'}

4. Save a list of the column names from the returned data.

   $columns = ($data | Get-Member -MemberType NoteProperty | Select-Object -Property Name).Name

Inserting WordPress Data into the MySQL Database

With the data and column names collected, you are ready to replicate the data into a MySQL database.

1. Install the module:

   Install-Module MySQLCmdlets

2. Connect to MySQL, using the server address and port of the MySQL server, valid user credentials, and a specific database with the table in which the data will be replicated:

   $mysql = Connect-MySQL -User $User -Password $Password -Database $Database -Server $Server -Port $Port

3. Loop through the WordPress data, store the values, and use the Add-MySQL cmdlet to insert the data into the MySQL database, one row at a time. In this example, the table will need to have the same name as the WordPress resource (Categories) and to exist in the database.

   $data | % { $row = $_ $values = @() $columns | % { $col = $_ $values += $row.$($col) } Add-MySQL -Connection $mysql -Table "Categories" -Columns $columns -Values $values }

You have now replicated your WordPress data to a MySQL database. This gives you freedom to work with WordPress data in the same way that you work with other MySQL tables, whether that is performing analytics, building reports, or other business functions.

Notes

• Once you have connected to WordPress and MySQL in PowerShell, you can pipe command results to perform the replication in a single line:

  Select-WordPress -Connection $wordpress -Table "Categories" | % { $row = $_ $values = @() $columns | % { $col = $_ $values += $row.$($col) } Add-MySQL -Connection $mysql -Table "Categories" -Columns $columns -Values $values }

• If you wish to replicate the WordPress data to another database using another PowerShell module, you will want to exclude the Columns, Connection, and Table columns from the data returned by the Select-WordPress cmdlet since those columns are used to help pipe data from one CData cmdlet to another:

  $columns = ($data | Get-Member -MemberType NoteProperty | Select-Object -Property Name).Name | ? {$_ -NotIn @('Columns','Connection','Table')}