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WordPress

get_allowed_http_origins(): string[]

Since
3.4.0
Source
wp-includes/http.php:436
Retrieves list of allowed HTTP origins.

Compatibility

WordPress
since 3.4.0
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

string[]
Array of origin URLs.

Performance profile

How much work a call to get_allowed_http_origins() 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

Touches nothing outside its own arguments.

Scaling
Constant

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

Instructions
33

Executed per call on PHP 8.5. The body compiles to 33.

Plugin surface
1 hook

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

Called by
1

1 place in core call this, so the cost is paid more often than your own code shows.

What it touches

  • hookthird-party callbacksapply_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 · 1 distinct outcome

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

WhenInstructionsCalls it makes
always33admin_url(), parse_url(), home_url(), parse_url(), apply_filters()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 33 instructions, 33 executed per call, 0 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 get_allowed_http_origins() runs, in this order:

  1. apply_filters( allowed_http_origins )filterline 464 (+28 into the body)

    Changes the origin types allowed for HTTP requests.

Uses · 3

  • admin_url()Retrieves the URL to the admin area for the current site.
  • home_url()Retrieves the URL for the current site where the front end is accessible.
  • apply_filters()Calls the callback functions that have been added to a filter hook.

Used by · 1

Source code

function get_allowed_http_origins() {	$admin_origin = parse_url( admin_url() );	$home_origin  = parse_url( home_url() ); 	// @todo Preserve port?	$allowed_origins = array_unique(		array(			'http://' . $admin_origin['host'],			'https://' . $admin_origin['host'],			'http://' . $home_origin['host'],			'https://' . $home_origin['host'],		)	); 	/**	 * Changes the origin types allowed for HTTP requests.	 *	 * @since 3.4.0	 *	 * @param string[] $allowed_origins {	 *     Array of default allowed HTTP origins.	 *	 *     @type string $0 Non-secure URL for admin origin.	 *     @type string $1 Secure URL for admin origin.	 *     @type string $2 Non-secure URL for home origin.	 *     @type string $3 Secure URL for home origin.	 * }	 */	return apply_filters( 'allowed_http_origins', $allowed_origins );}

Changelog

Introduced in 3.4.0. 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 6.8.8 tag, from src/wp-includes/http.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
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