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WP_Site_Health::test_php_extension_availability( string $extension = null, string $function = null, string $constant = null, string $class = null )

This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

Check if the passed extension or function are available.

Description

Make the check for available PHP modules into a simple boolean operator for a cleaner test runner.

Parameters

$extension

(string) (Optional) The extension name to test.

Default value: null

$function

(string) (Optional) The function name to test.

Default value: null

$constant

(string) (Optional) The constant name to test for.

Default value: null

$class

(string) (Optional) The class name to test for.

Default value: null

Return

(bool) Whether or not the extension and function are available.

Source

File: wp-admin/includes/class-wp-site-health.php 

private function test_php_extension_availability( $extension = null, $function = null, $constant = null, $class = null ) {
		// If no extension or function is passed, claim to fail testing, as we have nothing to test against.
		if ( ! $extension && ! $function && ! $constant && ! $class ) {
			return false;
		}

		if ( $extension && ! extension_loaded( $extension ) ) {
			return false;
		}
		if ( $function && ! function_exists( $function ) ) {
			return false;
		}
		if ( $constant && ! defined( $constant ) ) {
			return false;
		}
		if ( $class && ! class_exists( $class ) ) {
			return false;
		}

		return true;
	}

Changelog

Version Description
5.3.0 The $constant and $class parameters were added.
5.2.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/wp_site_health/test_php_extension_availability