PHP WP_Automatic_Updater::should_update方法代码示例

/**
 * Gets the best available (and enabled) Auto-Update for WordPress Core.
 *
 * If there's 1.2.3 and 1.3 on offer, it'll choose 1.3 if the install allows it, else, 1.2.3
 *
 * @since 3.7.0
 *
 * @return array|false False on failure, otherwise the core update offering.
 */
function find_core_auto_update() {
	$updates = get_site_transient( 'update_core' );
	if ( ! $updates || empty( $updates->updates ) )
		return false;

	include_once( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' );

	$auto_update = false;
	$upgrader = new WP_Automatic_Updater;
	foreach ( $updates->updates as $update ) {
		if ( 'autoupdate' != $update->response )
			continue;

		if ( ! $upgrader->should_update( 'core', $update, ABSPATH ) )
			continue;

		if ( ! $auto_update || version_compare( $update->current, $auto_update->current, '>' ) )
			$auto_update = $update;
	}
	return $auto_update;
}

/**
 * Gets the best available (and enabled) Auto-Update for WordPress Core.
 *
 * If there's 1.2.3 and 1.3 on offer, it'll choose 1.3 if the install allows it, else, 1.2.3
 *
 * @since 3.7.0
 *
 * @return array|false False on failure, otherwise the core update offering.
 */
function find_core_auto_update()
{
    $updates = get_site_transient('update_core');
    if (!$updates || empty($updates->updates)) {
        return false;
    }
    $auto_update = false;
    $upgrader = new WP_Automatic_Updater();
    foreach ($updates->updates as $update) {
        if ('autoupdate' != $update->response) {
            continue;
        }
        if (!$upgrader->should_update('core', $update, ABSPATH)) {
            continue;
        }
        if (!$auto_update || version_compare($update->current, $auto_update->current, '>')) {
            $auto_update = $update;
        }
    }
    return $auto_update;
}

/**
 * Display upgrade WordPress for downloading latest or upgrading automatically form.
 *
 * @since 2.7.0
 *
 * @global string $wp_version
 * @global string $required_php_version
 * @global string $required_mysql_version
 */
function core_upgrade_preamble()
{
    global $wp_version, $required_php_version, $required_mysql_version;
    $updates = get_core_updates();
    if (!isset($updates[0]->response) || 'latest' == $updates[0]->response) {
        echo '<h3>';
        _e('You have Project Nami ' . get_projectnami_version() . ' which contains the latest version of WordPress.');
        if (wp_http_supports(array('ssl'))) {
            require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
            $upgrader = new WP_Automatic_Updater();
            $future_minor_update = (object) array('current' => $wp_version . '.1.next.minor', 'version' => $wp_version . '.1.next.minor', 'php_version' => $required_php_version, 'mysql_version' => $required_mysql_version);
            $should_auto_update = $upgrader->should_update('core', $future_minor_update, ABSPATH);
            if ($should_auto_update) {
                echo ' ' . __('Future security updates will be applied automatically.');
            }
        }
        echo '</h2>';
    } else {
        echo '<div class="notice notice-warning"><p>';
        _e('<strong>Important:</strong> before updating, please back up your database and files.');
        echo '</p></div>';
        echo '<h3 class="response">';
        _e('An updated version of WordPress is available. Please check <a href="http://projectnami.org/download/">the Project Nami Download page</a> for the latest build.');
        echo '</h3>';
    }
    if (isset($updates[0]) && $updates[0]->response == 'development') {
        require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
        $upgrader = new WP_Automatic_Updater();
        if (wp_http_supports('ssl') && $upgrader->should_update('core', $updates[0], ABSPATH)) {
            echo '<div class="updated inline"><p>';
            echo '<strong>' . __('BETA TESTERS:') . '</strong> ' . __('This site is set up to install updates of future beta versions automatically.');
            echo '</p></div>';
        }
    }
    echo '<ul class="core-updates">';
    foreach ((array) $updates as $update) {
        echo '<li>';
        list_core_update($update);
        echo '</li>';
    }
    echo '</ul>';
    // Don't show the maintenance mode notice when we are only showing a single re-install option.
    if ($updates && (count($updates) > 1 || $updates[0]->response != 'latest')) {
        //echo '<p>' . __( 'While your site is being updated, it will be in maintenance mode. As soon as your updates are complete, your site will return to normal.' ) . '</p>';
    } elseif (!$updates) {
        list($normalized_version) = explode('-', $wp_version);
        echo '<p>' . sprintf(__('<a href="%s">Learn more about WordPress %s</a>.'), esc_url(self_admin_url('about.php')), $normalized_version) . '</p>';
    }
    dismissed_updates();
}

		<div class="col-3 last-feature">
			<h4><?php _e( 'More Reliable Than Ever' ); ?></h4>
			<p><?php _e( 'The update process has been made even more reliable and secure, with dozens of new checks and safeguards.' ); ?></p>
			<p><?php _e( 'You&#8217;ll still need to click &#8220;Update Now&#8221; once WordPress 3.8 is released, but we&#8217;ve never had more confidence in that beautiful blue button.' ); ?></p>
		</div>
		<?php
		if ( current_user_can( 'update_core' ) ) {
			$future_minor_update = (object) array(
				'current'       => $wp_version . '.1.next.minor',
				'version'       => $wp_version . '.1.next.minor',
				'php_version'   => $required_php_version,
				'mysql_version' => $required_mysql_version,
			);
			require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
			$updater = new WP_Automatic_Updater;
			$can_auto_update = wp_http_supports( array( 'ssl' ) ) && $updater->should_update( 'core', $future_minor_update, ABSPATH );

			if ( $can_auto_update ) {
				echo '<p class="about-auto-update cool">' . __( 'This site <strong>is</strong> able to apply these updates automatically. Cool!' ). '</p>';

			// If the updater is disabled entirely, don't show them anything.
			} elseif ( ! $updater->is_disabled() ) {
				echo '<p class="about-auto-update">';
				// If this is is filtered to false, they won't get emails, so don't claim we will.
				// Assumption: If the user can update core, they can see what the admin email is.

				/** This filter is documented in wp-admin/includes/class-wp-upgrader.php */
				if ( apply_filters( 'send_core_update_notification_email', true, $future_minor_update ) ) {
					printf( __( 'This site <strong>is not</strong> able to apply these updates automatically. But we&#8217;ll email %s when there is a new security release.' ), esc_html( get_site_option( 'admin_email' ) ) );
				} else {
					_e( 'This site <strong>is not</strong> able to apply these updates automatically.' );