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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 412 | * @param string $blogname The site name |
| 413 | * @param string $blog_title The site title |
| 414 | * @param array $errors |
| 415 | */ |
| 416 | function signup_blog($user_name = '', $user_email = '', $blogname = '', $blog_title = '', $errors = '') { |
| 417 | if ( !is_wp_error($errors) ) |
| 418 | $errors = new WP_Error(); |
| 419 | |
| 420 | // allow definition of default variables |
| 421 | $filtered_results = apply_filters('signup_blog_init', array('user_name' => $user_name, 'user_email' => $user_email, 'blogname' => $blogname, 'blog_title' => $blog_title, 'errors' => $errors )); |
| 422 | $user_name = $filtered_results['user_name']; |
| 423 | $user_email = $filtered_results['user_email']; |
| 424 | $blogname = $filtered_results['blogname']; |
| 425 | $blog_title = $filtered_results['blog_title']; |
| 426 | $errors = $filtered_results['errors']; |
| 427 | |
| 428 | if ( empty($blogname) ) |
| 429 | $blogname = $user_name; |
| 430 | ?> |