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WP_Http_Curl::test( array $args = array() ): bool

Since
2.7.0
Source
wp-includes/class-wp-http-curl.php:392
Determines whether this class can be used for retrieving a URL.

Parameters

$argsarrayoptional
Array of request arguments. Default empty array.Default: array()

Return

bool
False means this class can not be used, true means it can.

Cost profile

Measured from the compiled opcodes, not from a stopwatch. Every number here is identical on any machine that runs the same PHP version, and every function in core is ranked by these figures.

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
11–19

Executed per call on PHP 8.4, depending on the branch taken. The body compiles to 20.

Plugin surface
1 hook

Third-party callbacks on 'use_curl_transport' 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()called directly

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_Http_Curl::test() can have, taken from its control-flow graph on PHP 8.4.

WhenInstructionsCalls it makes
always11–13apply_filters()
always12–14curl_version()
always17–19curl_version()apply_filters()

Across PHP versions

PHPCompiledExecutedBranchesNotes
7.42011–193Compiles to the same instructions
8.12011–193Compiles to the same instructions
8.22011–193Compiles to the same instructions
8.32011–193Compiles to the same instructions
8.42011–193Compiles to the same instructions

Oldest PHP that compiles this body: 7.4. An instruction is not a fixed amount of time, so a version with the same count is not necessarily the same speed; what the count rules out is a difference in the work itself.

Hooks fired · 1

One hook fires while WP_Http_Curl::test() runs, in this order:

  1. apply_filters( use_curl_transport )filterline 415 (+23 into the body)

    Filters whether cURL can be used as a transport for retrieving a URL.

Uses · 1

  • apply_filters()Calls the callback functions that have been added to a filter hook.

Source

	public static function test( $args = array() ) {		if ( ! function_exists( 'curl_init' ) || ! function_exists( 'curl_exec' ) ) {			return false;		} 		$is_ssl = isset( $args['ssl'] ) && $args['ssl']; 		if ( $is_ssl ) {			$curl_version = curl_version();			// Check whether this cURL version support SSL requests.			if ( ! ( CURL_VERSION_SSL & $curl_version['features'] ) ) {				return false;			}		} 		/**		 * Filters whether cURL can be used as a transport for retrieving a URL.		 *		 * @since 2.7.0		 *		 * @param bool  $use_class Whether the class can be used. Default true.		 * @param array $args      An array of request arguments.		 */		return apply_filters( 'use_curl_transport', true, $args );	}

History

Introduced in 2.7.0. 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/class-wp-http-curl.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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