WordPress:WPMU Functions/wpmu validate blog signup

Makes some verifications about new blog. Located : 'wp-includes\wpmu-functions.php'

Blog ID Verifications

• If not empty
• If not illegal names like :
  "www", "web", "root", "admin", "main", "invite", "administrator"
• If only lowercase letters and numbers
• Number of letters, at least 4 characters
• If is not contain "underscore", the _ character
• If is not only contain number
• If already exists in DB
• If reserved

Blog Title verifications

• If not empty

Usage

To get the blog name, you would use the following:

 $blog_id    = 'newblog'; //the url given to the new blog E.g. newblog.domain.com
 $blog_title = 'New Blog'; //the title given to the new blog

 $result = wpmu_validate_blog_signup($blog_id, $blog_title);

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