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WordPress

wp_safe_remote_request( string $url, array $args = array() ): array|WP_Error

Since
3.6.0
Source
wp-includes/http.php:50
Retrieves the raw response from a safe HTTP request.

Description

This function is ideal when the HTTP request is being made to an arbitrary URL. The URL, and every URL it redirects to, are validated with wp_http_validate_url() to avoid Server Side Request Forgery attacks (SSRF).

Compatibility

WordPress
since 3.6.0
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

$urlstring
URL to retrieve.
$argsarrayoptional
Request arguments. Default empty array.
See WP_Http::request() for information on accepted arguments.Default: array()

Return value

array|WP_Error
The response or WP_Error on failure.
See WP_Http::request() for information on return value.

Performance profile

How much work a call to wp_safe_remote_request() 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

Makes an outbound HTTP request.

Scaling
Constant

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

Instructions
12

Executed per call on PHP 8.5. The body compiles to 12.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
4

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

What it touches

  • httpoutbound HTTP requestwp_safe_remote_request()this function does it

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 wp_safe_remote_request() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
always12_wp_http_get_object(), ->request()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 12 instructions, 12 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.

Uses · 1

Used by · 4

Source code

View on Trac View on GitHub 

function wp_safe_remote_request( $url, $args = array() ) {	$args['reject_unsafe_urls'] = true;	$http                       = _wp_http_get_object();	return $http->request( $url, $args );}

Changelog

Introduced in 3.6.0. 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.
Corrections
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