validate_another_blog_signup(): null|bool

Compatibility

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Return value

null|bool

True if site signup was validated, false on error.
The function halts all execution if the user is not logged in.

Performance profile

How much work a call to validate_another_blog_signup() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class

Light

Only touches the object cache, via wp_cache_set_sites_last_changed().

Scaling

Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions

33–103

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 110.

Plugin surface

2 hooks

Third-party callbacks on 'signup_create_blog_meta', 'add_signup_meta' run inside this call, and their cost is not bounded by anything here.

Called by

0

Nothing in core calls this; the cost is only what you spend yourself.

What it touches

• hookthird-party callbacksapply_filters_deprecated()called directly
• cacheobject cachewp_cache_set_sites_last_changed()one call below validate_another_blog_signup()

Further down the call graph this can also reach option, query, serialize, transient and http. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.

What one call costs · 14 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost validate_another_blog_signup() can have, taken from its control-flow graph on PHP 8.5.

Hooks and filters fired · 2

2 hooks fire while validate_another_blog_signup() runs, in this order:

1. 1
   do_action( signup_create_blog_meta )filter_deprecatedline 483 (+52 into the body)

   Filters the new site meta variables.

2. 2
   apply_filters( add_signup_meta )filterline 497 (+66 into the body)

   Filters the new default site meta variables.

Uses · 13

• wp_get_current_user()Retrieves the current user object.
• is_user_logged_in()Determines whether the current visitor is a logged in user.
• validate_blog_form()Validates the new site sign-up.
• signup_another_blog()Shows a form for returning users to sign up for another site.
• signup_get_available_languages()Retrieves languages available during the site/user sign-up process.
• wp_unslash()Removes slashes from a string or recursively removes slashes from strings within an array.
• sanitize_text_field()Sanitizes a string from user input or from the database.
• apply_filters_deprecated()Fires functions attached to a deprecated filter hook.
• apply_filters()Calls the callback functions that have been added to a filter hook.
• wpmu_create_blog()Creates a site.
• get_current_network_id()Retrieves the current network ID.
• is_wp_error()Checks whether the given variable is a WordPress Error.

Source code

View on Trac ↗View on GitHub ↗

431function validate_another_blog_signup() {432	global $blogname, $blog_title, $errors, $domain, $path;433	$current_user = wp_get_current_user();434	if ( ! is_user_logged_in() ) {435		die();436	}437 438	$result = validate_blog_form();439 440	// Extracted values set/overwrite globals.441	$domain     = $result['domain'];442	$path       = $result['path'];443	$blogname   = $result['blogname'];444	$blog_title = $result['blog_title'];445	$errors     = $result['errors'];446 447	if ( $errors->has_errors() ) {448		signup_another_blog( $blogname, $blog_title, $errors );449		return false;450	}451 452	$public = (int) $_POST['blog_public'];453 454	$blog_meta_defaults = array(455		'lang_id' => 1,456		'public'  => $public,457	);458 459	// Handle the language setting for the new site.460	if ( ! empty( $_POST['WPLANG'] ) ) {461 462		$languages = signup_get_available_languages();463 464		if ( in_array( $_POST['WPLANG'], $languages, true ) ) {465			$language = wp_unslash( sanitize_text_field( $_POST['WPLANG'] ) );466 467			if ( $language ) {468				$blog_meta_defaults['WPLANG'] = $language;469			}470		}471	}472 473	/**474	 * Filters the new site meta variables.475	 *476	 * Use the {@see 'add_signup_meta'} filter instead.477	 *478	 * @since MU (3.0.0)479	 * @deprecated 3.0.0 Use the {@see 'add_signup_meta'} filter instead.480	 *481	 * @param array $blog_meta_defaults An array of default blog meta variables.482	 */483	$meta_defaults = apply_filters_deprecated( 'signup_create_blog_meta', array( $blog_meta_defaults ), '3.0.0', 'add_signup_meta' );484 485	/**486	 * Filters the new default site meta variables.487	 *488	 * @since 3.0.0489	 *490	 * @param array $meta {491	 *     An array of default site meta variables.492	 *493	 *     @type int $lang_id     The language ID.494	 *     @type int $blog_public Whether search engines should be discouraged from indexing the site. 1 for true, 0 for false.495	 * }496	 */497	$meta = apply_filters( 'add_signup_meta', $meta_defaults );498 499	$blog_id = wpmu_create_blog( $domain, $path, $blog_title, $current_user->ID, $meta, get_current_network_id() );500 501	if ( is_wp_error( $blog_id ) ) {502		return false;503	}504 505	confirm_another_blog_signup( $domain, $path, $blog_title, $current_user->user_login, $current_user->user_email, $meta, $blog_id );506	return true;507}

Changelog

Introduced in MU (3.0.0). Unchanged from 6.7.7 through 7.1.0.

1. 6.7.7
2. 6.8.8
3. 6.9.7
4. 7.0.4
5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 6.7.7 tag, from src/wp-signup.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

Something wrong on this page? Report it and it gets fixed in the next regeneration.