Add cURL test to WP 5.2 Site Health tests

site-health-curl-test.php

<?php

/**
  * Adds a cURL version test to Site Health
  *
  * Info here: https://make.wordpress.org/core/2019/04/25/site-health-check-in-5-2/
  * NOTE: Requires version 5.2+ of WordPress 
  *
 **/

function register_give_curl_tester( $tests ) {

    $tests['direct']['curl_tester'] = array(
        'label' => __( 'Test cURL' ),
        'test'  => 'give_test_curl_version',
    );

    return $tests;
}

add_filter( 'site_status_tests', 'register_give_curl_tester' );

function give_test_curl_version() {
    $results = array(
        'label'       => __( 'cURL Version' ),
        'status'      => 'good',
        'badge'       => array(
            'label' => __( 'Security' ),
            'color' => 'blue',
        ),
        'description' => sprintf(
            '<p>' .  __( 'Your cURL version is: ', 'give' ) . '%g -- this meets or exceeds the minimum requirement for secure online donations.</p>', curl_version()['version']),
        'actions'     => '',
        'test'        => 'curl_tester',
    );

    $curl_version = curl_version()['version'];

    if ( $curl_version < '7.40' ) {
        $results['status'] = 'critical';
        $results['label'] = __( 'cURL version is outdated' );
        $results['description'] = sprintf(
            '<p>' .  __( 'Your cURL version is: ', 'give' ) . '%g</p>', curl_version()['version']);
        $results['actions'] = sprintf(
            '<p>%s</p>',
            __( 'Your cURL version is outdated. This can negatively impact your online donations with GiveWP. Please contact your host about getting cURL updated to at least version 7.40.', 'give' )
        );
        $results['badge']['color'] = 'red';
    }

    return $results;

}