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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 |
---|---|
536 | * An array of default site creation variables. |
537 | * |
538 | * @type string $user_name The user username. |
539 | * @type string $user_email The user email address. |
540 | * @type string $blogname The blogname. |
541 | * @type string $blog_title The title of the site. |
542 | * @type array $errors An array of possible errors relevant to new site creation variables. |
543 | * } |
544 | */ |
545 | $filtered_results = apply_filters( 'signup_blog_init', $signup_blog_defaults ); |
546 |
|
547 | $user_name = $filtered_results['user_name']; |
548 | $user_email = $filtered_results['user_email']; |
549 | $blogname = $filtered_results['blogname']; |
550 | $blog_title = $filtered_results['blog_title']; |
551 | $errors = $filtered_results['errors']; |
552 |
|
553 | if ( empty($blogname) ) |
554 | $blogname = $user_name; |