WP_Customize_Manager::get_allowed_urls(): array
- Since
- 4.7.0
- Source
wp-includes/class-wp-customize-manager.php:4657
Description
If the front end and the admin are served from the same domain, load the preview over ssl if the Customizer is being loaded over ssl. This avoids insecure content warnings. This is not attempted if the admin and front end are on different domains to avoid the case where the front end doesn't have ssl certs. Domain mapping plugins can allow other urls in these conditions using the customize_allowed_urls filter.
Compatibility
- WordPress
- since 4.7.0
- 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.
Return value
array- Allowed URLs.
Performance profile
How much work a call to WP_Customize_Manager::get_allowed_urls() 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
- Trivial
- Scaling
- Constant
- Instructions
- 16–25
- Plugin surface
- 1 hook
- Called by
- 3
Touches nothing outside its own arguments.
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 25.
Third-party callbacks on 'customize_allowed_urls' run inside this call, and their cost is not bounded by anything here.
3 places in core call this, so the cost is paid more often than your own code shows.
What it touches
- hookthird-party callbacks
apply_filters()called directly
Further down the call graph this can also reach option, cache, serialize, 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 WP_Customize_Manager::get_allowed_urls() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
!is_ssl() | 16 | home_url(), is_ssl(), apply_filters(), array_unique() |
is_ssl() && ->is_cross_domain() | 19 | home_url(), is_ssl(), ->is_cross_domain(), apply_filters(), array_unique() |
is_ssl() && !->is_cross_domain() | 25 | home_url(), is_ssl(), ->is_cross_domain(), home_url(), apply_filters(), array_unique() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 25 instructions, 16–25 executed per call, 2 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 WP_Customize_Manager::get_allowed_urls() runs, in this order:
- apply_filters( customize_allowed_urls )filterline 4671 (+14 into the body)
Filters the list of URLs allowed to be clicked and followed in the Customizer preview.
Uses · 4
- home_url()Retrieves the URL for the current site where the front end is accessible.
- is_ssl()Determines if SSL is used.
- apply_filters()Calls the callback functions that have been added to a filter hook.
- WP_Customize_Manager::is_cross_domain()Determines whether the admin and the frontend are on different domains.
Used by · 3
- WP_Customize_Manager::add_state_query_params()Adds customize state query params to a given URL if preview is allowed.
- WP_Customize_Manager::customize_pane_settings()Prints JavaScript settings for parent window.
- WP_Customize_Manager::customize_preview_settings()Prints JavaScript settings for preview frame.
Source code
public function get_allowed_urls() { $allowed_urls = array( home_url( '/' ) ); if ( is_ssl() && ! $this->is_cross_domain() ) { $allowed_urls[] = home_url( '/', 'https' ); } /** * Filters the list of URLs allowed to be clicked and followed in the Customizer preview. * * @since 3.4.0 * * @param string[] $allowed_urls An array of allowed URLs. */ $allowed_urls = array_unique( apply_filters( 'customize_allowed_urls', $allowed_urls ) ); return $allowed_urls; }Changelog
Introduced in 4.7.0. 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 7.0.4 tag, from
src/wp-includes/class-wp-customize-manager.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.