newblog_notify_siteadmin( WP_Site|int $blog_id, string $deprecated = '' ): bool
- Since
- MU (3.0.0), 5.1.0
- Source
wp-includes/ms-functions.php:1482
Description
Filter 'newblog_notify_siteadmin' to change the content of the notification email.
Compatibility
- WordPress
- since 5.1.0
- PHP
- 7.4–8.6-dev
- 6.7.7
- 6.8.8
- 6.9.7
- 7.0.4
- 7.1.0
Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.
Parameters
$blog_idWP_Site|int- The new site's object or ID.
$deprecatedstringoptional- Not used.Default:
''
Return value
bool
Performance profile
How much work a call to newblog_notify_siteadmin() 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
- Expensive
- Scaling
- Constant
- Instructions
- 10–74
- Plugin surface
- 1 hook
- Called by
- 0
Sends mail via wp_mail().
No loop in the body: the same number of instructions runs whatever you pass in.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 76.
Third-party callbacks on 'newblog_notify_siteadmin' run inside this call, and their cost is not bounded by anything here.
Nothing in core calls this; the cost is only what you spend yourself.
What it touches
- optionnetwork option
get_site_option()called directly - hookthird-party callbacks
apply_filters()called directly - mailsends mail
wp_mail()called directly - cacheobject cache
wp_cache_switch_to_blog()one call below newblog_notify_siteadmin() - serializeserialisation
maybe_unserialize()one call below newblog_notify_siteadmin()
Further down the call graph this can also reach query and transient. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.
What one call costs · 3 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost newblog_notify_siteadmin() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 10–12 | get_site_option() |
!is_email() | 18–20 | get_site_option(), get_site_option(), is_email() |
is_email() | 72–74 | get_site_option(), get_site_option(), is_email(), network_admin_url(), esc_url(), switch_to_blog(), get_option(), site_url(), restore_current_blog(), __(), wp_unslash(), sprintf(), apply_filters(), __(), sprintf(), wp_mail() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 76 instructions, 10–74 executed per call, 3 branches. The work does not change between versions.
An instruction is not a fixed amount of time, so a matching count is not necessarily the same speed; what it rules out is a difference in the work itself.
Hooks and filters fired · 1
One hook fires while newblog_notify_siteadmin() runs, in this order:
- apply_filters( newblog_notify_siteadmin )filterline 1528 (+46 into the body)
Filters the message body of the new site activation email sent to the network administrator.
Uses · 12
- get_site_option()Retrieve an option value for the current network based on name of option.
- is_email()Verifies that an email is valid.
- esc_url()Checks and cleans a URL.
- network_admin_url()Retrieves the URL to the admin area for the network.
- switch_to_blog()Switches the current blog.
- get_option()Retrieves an option value based on an option name.
- site_url()Retrieves the URL for the current site where WordPress application files (e.g. wp-blog-header.php or the wp-admin/ folder) are accessible.
- restore_current_blog()Restores the current blog, after calling switch_to_blog().
- __()Retrieves the translation of $text.
- wp_unslash()Removes slashes from a string or recursively removes slashes from strings within an array.
- apply_filters()Calls the callback functions that have been added to a filter hook.
- wp_mail()Sends an email, similar to PHP's mail function.
Source code
function newblog_notify_siteadmin( $blog_id, $deprecated = '' ) { if ( is_object( $blog_id ) ) { $blog_id = $blog_id->blog_id; } if ( 'yes' !== get_site_option( 'registrationnotification' ) ) { return false; } $email = get_site_option( 'admin_email' ); if ( ! is_email( $email ) ) { return false; } $options_site_url = esc_url( network_admin_url( 'settings.php' ) ); switch_to_blog( $blog_id ); $blogname = get_option( 'blogname' ); $siteurl = site_url(); restore_current_blog(); $msg = sprintf( /* translators: New site notification email. 1: Site URL, 2: User IP address, 3: URL to Network Settings screen. */ __( 'New Site: %1$sURL: %2$sRemote IP address: %3$s Disable these notifications: %4$s' ), $blogname, $siteurl, wp_unslash( $_SERVER['REMOTE_ADDR'] ), $options_site_url ); /** * Filters the message body of the new site activation email sent * to the network administrator. * * @since MU (3.0.0) * @since 5.4.0 The `$blog_id` parameter was added. * * @param string $msg Email body. * @param int|string $blog_id The new site's ID as an integer or numeric string. */ $msg = apply_filters( 'newblog_notify_siteadmin', $msg, $blog_id ); /* translators: New site notification email subject. %s: New site URL. */ wp_mail( $email, sprintf( __( 'New Site Registration: %s' ), $siteurl ), $msg ); return true;}Changelog
Introduced in 5.1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
About this page
- Parsed data
- Generated from the wordpress-develop 7.1.0 tag, from
src/wp-includes/ms-functions.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.