PHP wp_timezone_choice函数代码示例

 public function render()
 {
     $field = $this->field;
     $args = wp_parse_args($this->args, array('value' => $field->escaped_value(), 'desc' => $this->_desc(true), 'text_datetime_timestamp' => array(), 'select_timezone' => array()));
     $args['value'] = $field->escaped_value();
     if (is_array($args['value'])) {
         $args['value'] = '';
     }
     $datetime = maybe_unserialize($args['value']);
     $value = $tzstring = '';
     if ($datetime && $datetime instanceof DateTime) {
         $tz = $datetime->getTimezone();
         $tzstring = $tz->getName();
         $value = $datetime->getTimestamp();
     }
     $timestamp_args = wp_parse_args($args['text_datetime_timestamp'], array('desc' => '', 'value' => $value, 'rendered' => true));
     $datetime_timestamp = $this->types->text_datetime_timestamp($timestamp_args);
     $timezone_select_args = wp_parse_args($args['select_timezone'], array('class' => 'cmb2_select cmb2-select-timezone', 'name' => $this->_name('[timezone]'), 'id' => $this->_id('_timezone'), 'options' => wp_timezone_choice($tzstring), 'desc' => $args['desc'], 'rendered' => true));
     $select = $this->types->select($timezone_select_args);
     return $this->rendered($datetime_timestamp . "\n" . $select);
 }

$tout = '';
$tout .= '<div class="spColumnSection spProfileLeftCol">';
$tout .= '<p class="spProfileLabel">' . sp_text('Select your Timezone') . ':</p>';
$tout .= '</div>';
$tout .= '<div class="spColumnSection spProfileSpacerCol"></div>';
$tout .= '<div class="spColumnSection spProfileRightCol">';
$tz = get_option('timezone_string');
if (empty($tz) || substr($tz, 0, 3) == 'UTC') {
    $tz = 'UTC';
}
$tzUser = !empty($spProfileUser->timezone_string) ? $spProfileUser->timezone_string : $tz;
if (substr($tzUser, 0, 3) == 'UTC') {
    $tzUser = 'UTC';
}
$tout .= '<p class="spProfileLabel"><select class="spControl" id="timezone" name="timezone">';
$wptz = explode('<optgroup label=', wp_timezone_choice($tzUser));
unset($wptz[count($wptz) - 1]);
$tout .= implode('<optgroup label=', $wptz);
$tout .= '</select></p>';
$tout .= '<p><small>' . sp_text('Server Timezone set to') . ': <b>' . $tz . '</b></small></p>';
# timezone message
date_default_timezone_set($tz);
$now = localtime(time(), true);
if ($now['tm_isdst']) {
    $tout .= '<p><small>' . sp_text('This timezone is currently in daylight savings time') . '</small></p>';
} else {
    $tout .= '<p><small>' . sp_text('This timezone is currently in standard time') . '</small></p>';
}
$tout .= '<p><small>' . sp_text('Server Time is') . ': <b>' . date('Y-m-d G:i:s') . '</b></small></p>';
date_default_timezone_set($tzUser);
$tout .= '<p><small>' . sp_text('Local Time is') . ': <b>' . date('Y-m-d G:i:s') . '</b></small></p>';

/**
 * Gives a nicely formatted list of timezone strings.
 *
 * Strips the manual offsets from the default WordPress list.
 *
 * @since 1.0.0
 * @uses wp_timezone_choice()
 *
 * @param string $selected_zone Selected Zone.
 * @return string
 */
function audiotheme_timezone_choice($selected_zone = null)
{
    $selected = empty($selected_zone) ? get_option('timezone_string') : $selected_zone;
    $choices = wp_timezone_choice($selected);
    // Remove the manual offsets optgroup.
    $pos = strrpos($choices, '<optgroup');
    if (false !== $pos) {
        $choices = substr($choices, 0, $pos);
    }
    return apply_filters('audiotheme_timezone_dropdown', $choices, $selected);
}

        /**
         * Timezone settings
         *
         * @access public
         * @return void
         */
        public function timezone_setting()
        {
            $current_offset = get_option('gmt_offset');
            $tzstring = get_option('timezone_string');
            $check_zone_info = true;
            // Remove old Etc mappings. Fallback to gmt_offset.
            if (false !== strpos($tzstring, 'Etc/GMT')) {
                $tzstring = '';
            }
            if (empty($tzstring)) {
                // Create a UTC+- zone if no timezone string exists
                $check_zone_info = false;
                if (0 == $current_offset) {
                    $tzstring = 'UTC+0';
                } elseif ($current_offset < 0) {
                    $tzstring = 'UTC' . $current_offset;
                } else {
                    $tzstring = 'UTC+' . $current_offset;
                }
            }
            $class = 'chosen-select' . (is_rtl() ? ' chosen-rtl' : '');
            ?>
		<tr valign="top">
			<th scope="row" class="titledesc">
				<label for="timezone_string"><?php 
            _e('Timezone', 'sportspress');
            ?>
 <i class="dashicons dashicons-editor-help sp-desc-tip" title="<?php 
            _e('Choose a city in the same timezone as you.', 'sportspress');
            ?>
"></i></label>
			</th>
            <td class="forminp">
				<legend class="screen-reader-text"><span><?php 
            _e('Timezone', 'sportspress');
            ?>
</span></legend>
				<select id="timezone_string" name="timezone_string" class="<?php 
            echo $class;
            ?>
">
					<?php 
            echo wp_timezone_choice($tzstring);
            ?>
				</select>
       		</td>
       	</tr>
       	<?php 
        }

//.........这里部分代码省略.........
										<th scope="row" class="titledesc">
											<label for="timezone_string"><?php 
            _e('Timezone', 'sportspress');
            ?>
 <i class="dashicons dashicons-editor-help sp-desc-tip" title="<?php 
            _e('Choose a city in the same timezone as you.', 'sportspress');
            ?>
"></i></label>
										</th>
										<td>
											<select id="timezone_string" name="timezone_string" class="<?php 
            echo $class;
            ?>
">
												<?php 
            $current_offset = get_option('gmt_offset');
            $tzstring = get_option('timezone_string');
            $check_zone_info = true;
            // Remove old Etc mappings. Fallback to gmt_offset.
            if (false !== strpos($tzstring, 'Etc/GMT')) {
                $tzstring = '';
            }
            if (empty($tzstring)) {
                // Create a UTC+- zone if no timezone string exists
                $check_zone_info = false;
                if (0 == $current_offset) {
                    $tzstring = 'UTC+0';
                } elseif ($current_offset < 0) {
                    $tzstring = 'UTC' . $current_offset;
                } else {
                    $tzstring = 'UTC+' . $current_offset;
                }
            }
            echo wp_timezone_choice($tzstring);
            ?>
											</select>
										</td>
									</tr>
									<?php 
            $sport_options = SP_Admin_Sports::get_preset_options();
            $settings = array(array('id' => 'sportspress_sport', 'default' => 'custom', 'type' => 'sport', 'title' => __('Sport', 'sportspress'), 'welcome' => true, 'class' => $class, 'options' => $sport_options));
            SP_Admin_Settings::output_fields($settings);
            ?>
								</tbody>
							</table>
					        <p class="submit sportspress-actions">
					        	<input name="save" class="button-primary" type="submit" value="<?php 
            _e('Save Changes', 'sportspress');
            ?>
" />
					        	<input type="hidden" name="subtab" id="last_tab" />
					        	<?php 
            wp_nonce_field('sportspress-settings');
            ?>
					        </p>
						</form>
					</div>
					<?php 
            if (current_user_can('install_themes') && !current_theme_supports('sportspress')) {
                ?>
						<div class="last-feature">
							<h4><?php 
                _e('Free SportsPress Theme', 'sportspress');
                ?>
</h4>
							<a href="<?php 

    } elseif ($current_offset < 0) {
        $tzstring = 'UTC' . $current_offset;
    } else {
        $tzstring = 'UTC+' . $current_offset;
    }
}
?>
<th scope="row"><label for="timezone_string"><?php 
_e('Timezone');
?>
</label></th>
<td>

<select id="timezone_string" name="timezone_string">
<?php 
echo wp_timezone_choice($tzstring);
?>
</select>

	<span id="utc-time"><?php 
printf(__('<abbr title="Coordinated Universal Time">UTC</abbr> time is <code>%s</code>'), date_i18n($timezone_format, false, 'gmt'));
?>
</span>
<?php 
if (get_option('timezone_string') || !empty($current_offset)) {
    ?>
	<span id="local-time"><?php 
    printf(__('Local time is <code>%1$s</code>'), date_i18n($timezone_format));
    ?>
</span>
<?php 

    /**
     * Print the advanced settings panel.
     *
     * @since  3.0.0
     * @access private
     *
     * @param  \WP_Post $post
     */
    private static function advanced_settings_panel($post)
    {
        ?>
		<table>
			<thead>
				<tr><th colspan="2"><?php 
        _e('Date and Time', 'google-calendar-events');
        ?>
</th></tr>
			</thead>
			<tbody class="simcal-panel-section simcal-panel-datetime-formatting">
				<tr class="simcal-panel-field">
					<th><label for="_calendar_timezone_setting"><?php 
        _e('Timezone', 'google-calendar-events');
        ?>
</label></th>
					<td>
						<?php 
        $timezone_wordpress = simcal_get_wp_timezone();
        $timezone_default = $timezone_wordpress ? $timezone_wordpress : 'UTC';
        $timezone_setting = esc_attr(get_post_meta($post->ID, '_feed_timezone_setting', true));
        $timezone = esc_attr(get_post_meta($post->ID, '_feed_timezone', true));
        $timezone = $timezone ? $timezone : $timezone_default;
        ?>
						<select name="_feed_timezone_setting"
						        id="_feed_timezone_setting"
						        class="simcal-field simcal-field-select simcal-field-inline simcal-field-show-next"
						        data-show-next-if-value="use_custom">
							<option value="use_calendar" <?php 
        selected('use_calendar', $timezone_setting, true);
        ?>
><?php 
        _ex('Events source default', 'Use the calendar default setting', 'google-calendar-events');
        ?>
</option>
							<option value="use_site" <?php 
        selected('use_site', $timezone_setting, true);
        ?>
><?php 
        printf(_x('Site default', 'Use this site default setting', 'google-calendar-events') . ' (%s)', $timezone_default);
        ?>
</option>
							<option value="use_custom" <?php 
        selected('use_custom', $timezone_setting, true);
        ?>
><?php 
        _ex('Custom', 'Use a custom setting', 'google-calendar-events');
        ?>
</option>
						</select>
						<select name="_feed_timezone"
						        id="_feed_timezone"
						        class="simcal-field simcal-field-select simcal-field-inline"
							<?php 
        echo 'use_custom' != $timezone_setting ? 'style="display: none;"' : '';
        ?>
>
							<?php 
        echo wp_timezone_choice($timezone);
        ?>
						</select>
						<i class="simcal-icon-help simcal-help-tip" data-tip="<?php 
        _e('Using a different timezone may alter the date and time display of your calendar events. It is recommended to keep the calendar default timezone.', 'google-calendar-events');
        ?>
"></i>
					</td>
				</tr>
				<tr class="simcal-panel-field">
					<th><label for="_calendar_date_format_setting"><?php 
        _e('Date format', 'google-calendar-events');
        ?>
</label></th>
					<td>
						<?php 
        $date_format_setting = esc_attr(get_post_meta($post->ID, '_calendar_date_format_setting', true));
        $date_format_default = esc_attr(get_option('date_format'));
        $date_format = esc_attr(get_post_meta($post->ID, '_calendar_date_format', true));
        $date_format_php = esc_attr(get_post_meta($post->ID, '_calendar_date_format_php', true));
        $date_format_php = $date_format_php ? $date_format_php : $date_format_default;
        ?>
						<select name="_calendar_date_format_setting"
						        id="_calendar_date_format_setting"
								class="simcal-field simcal-field-select simcal-field-show-other">
							<option value="use_site" data-show-field="_calendar_date_format_default" <?php 
        selected('use_site', $date_format_setting, true);
        ?>
><?php 
        _ex('Site default', 'Use this site default setting', 'google-calendar-events');
        ?>
</option>
							<option value="use_custom" data-show-field="_calendar_date_format" <?php 
        selected('use_custom', $date_format_setting, true);
//.........这里部分代码省略.........

    /**
     * @access public
     * @param string $timezone_string
     */
    public static function timezone_select_input($timezone_string = '')
    {
        // get WP date time format
        $datetime_format = get_option('date_format') . ' ' . get_option('time_format');
        // if passed a value, then use that, else get WP option
        $timezone_string = !empty($timezone_string) ? $timezone_string : get_option('timezone_string');
        // check if the timezone is valid but don't throw any errors if it isn't
        $timezone_string = EEH_DTT_Helper::validate_timezone($timezone_string, false);
        $gmt_offset = get_option('gmt_offset');
        $check_zone_info = true;
        if (empty($timezone_string)) {
            // Create a UTC+- zone if no timezone string exists
            $check_zone_info = false;
            if ($gmt_offset > 0) {
                $timezone_string = 'UTC+' . $gmt_offset;
            } elseif ($gmt_offset < 0) {
                $timezone_string = 'UTC' . $gmt_offset;
            } else {
                $timezone_string = 'UTC';
            }
        }
        ?>

		<p>
			<label for="timezone_string"><?php 
        _e('timezone');
        ?>
</label>
			<select id="timezone_string" name="timezone_string">
				<?php 
        echo wp_timezone_choice($timezone_string);
        ?>
			</select>
			<br />
			<span class="description"><?php 
        _e('Choose a city in the same timezone as the event.');
        ?>
</span>
		</p>

		<p>
			<span><?php 
        printf(__('%1$sUTC%2$s time is %3$s'), '<abbr title="Coordinated Universal Time">', '</abbr>', '<code>' . date_i18n($datetime_format, false, 'gmt') . '</code>');
        ?>
</span>
			<?php 
        if (!empty($timezone_string) || !empty($gmt_offset)) {
            ?>
				<br /><span><?php 
            printf(__('Local time is %1$s'), '<code>' . date_i18n($datetime_format) . '</code>');
            ?>
</span>
		<?php 
        }
        ?>

				<?php 
        if ($check_zone_info && $timezone_string) {
            ?>
				<br />
				<span>
					<?php 
            // Set TZ so localtime works.
            date_default_timezone_set($timezone_string);
            $now = localtime(time(), true);
            if ($now['tm_isdst']) {
                _e('This timezone is currently in daylight saving time.');
            } else {
                _e('This timezone is currently in standard time.');
            }
            ?>
					<br />
					<?php 
            if (function_exists('timezone_transitions_get')) {
                $found = false;
                $date_time_zone_selected = new DateTimeZone($timezone_string);
                $tz_offset = timezone_offset_get($date_time_zone_selected, date_create());
                $right_now = time();
                $tr['isdst'] = false;
                foreach (timezone_transitions_get($date_time_zone_selected) as $tr) {
                    if ($tr['ts'] > $right_now) {
                        $found = true;
                        break;
                    }
                }
                if ($found) {
                    $message = $tr['isdst'] ? __(' Daylight saving time begins on: %s.') : __(' Standard time begins  on: %s.');
                    // Add the difference between the current offset and the new offset to ts to get the correct transition time from date_i18n().
                    printf($message, '<code >' . date_i18n($datetime_format, $tr['ts'] + ($tz_offset - $tr['offset'])) . '</code >');
                } else {
                    _e('This timezone does not observe daylight saving time.');
                }
            }
            // Set back to UTC.
            date_default_timezone_set('UTC');
            ?>
//.........这里部分代码省略.........

    public static function ddtimezone($tz_event = '')
    {
        do_action('AHEE_log', __FILE__, __FUNCTION__, '');
        $timezone_format = _x('Y-m-d G:i:s', 'timezone date format');
        $current_offset = get_option('gmt_offset');
        $tzstring = $tz_event != '' ? $tz_event : get_option('timezone_string');
        //echo $tzstring;
        $check_zone_info = true;
        // Remove old Etc mappings.  Fallback to gmt_offset.
        if (false !== strpos($tzstring, 'Etc/GMT')) {
            $tzstring = '';
        }
        if (empty($tzstring)) {
            // Create a UTC+- zone if no timezone string exists
            $check_zone_info = false;
            if (0 == $current_offset) {
                $tzstring = 'UTC';
            } elseif ($current_offset < 0) {
                $tzstring = 'UTC' . $current_offset;
            } else {
                $tzstring = 'UTC+' . $current_offset;
            }
        }
        ?>

		<p><select id="timezone_string" name="timezone_string">
		<?php 
        echo wp_timezone_choice($tzstring);
        ?>
			</select>
			<br />
			<span class="description"><?php 
        _e('Choose a city in the same timezone as the event.');
        ?>
</span>
		</p>

		<p><span><?php 
        printf(__('<abbr title="Coordinated Universal Time">UTC</abbr> time is <code>%s</code>'), date_i18n($timezone_format, false, 'gmt'));
        ?>
</span>
			<?php 
        if (get_option('timezone_string') || !empty($current_offset)) {
            ?>
				<br /><span><?php 
            printf(__('Local time is <code>%1$s</code>'), date_i18n($timezone_format));
            ?>
</span>
		<?php 
        }
        ?>

				<?php 
        if ($check_zone_info && $tzstring) {
            ?>
				<br />
				<span>
					<?php 
            // Set TZ so localtime works.
            date_default_timezone_set($tzstring);
            $now = localtime(time(), true);
            if ($now['tm_isdst']) {
                _e('This timezone is currently in daylight saving time.');
            } else {
                _e('This timezone is currently in standard time.');
            }
            ?>
					<br />
					<?php 
            if (function_exists('timezone_transitions_get')) {
                $found = false;
                $date_time_zone_selected = new DateTimeZone($tzstring);
                $tz_offset = timezone_offset_get($date_time_zone_selected, date_create());
                $right_now = time();
                foreach (timezone_transitions_get($date_time_zone_selected) as $tr) {
                    if ($tr['ts'] > $right_now) {
                        $found = true;
                        break;
                    }
                }
                if ($found) {
                    echo ' ';
                    $message = $tr['isdst'] ? __('Daylight saving time begins on: <code>%s</code>.') : __('Standard time begins  on: <code>%s</code>.');
                    // Add the difference between the current offset and the new offset to ts to get the correct transition time from date_i18n().
                    printf($message, date_i18n(get_option('date_format') . ' ' . get_option('time_format'), $tr['ts'] + ($tz_offset - $tr['offset'])));
                } else {
                    _e('This timezone does not observe daylight saving time.');
                }
            }
            // Set back to UTC.
            date_default_timezone_set('UTC');
            ?>
				</span></p>
			<?php 
        }
    }

//.........这里部分代码省略.........
            ?>
</a></li>
								<li><a href="<?php 
            echo esc_url(admin_url(add_query_arg(array('post_type' => 'sp_player'), 'edit.php')));
            ?>
" class="welcome-icon sp-welcome-icon dashicons-groups"><?php 
            _e('Add New Player', 'prosports');
            ?>
</a></li>
								<li><a href="<?php 
            echo esc_url(admin_url(add_query_arg(array('post_type' => 'sp_event'), 'edit.php')));
            ?>
" class="welcome-icon sp-welcome-icon dashicons-calendar"><?php 
            _e('Add New Event', 'prosports');
            ?>
</a></li>
							</ul>
						</div>
						<div class="return-to-dashboard">
							<a href="<?php 
            echo esc_url(admin_url(add_query_arg(array('page' => 'prosports'), 'admin.php')));
            ?>
"><?php 
            _e('Go to ProSports Settings', 'prosports');
            ?>
</a>
						</div>
					<?php 
        } else {
            ?>
						<form method="post" id="mainform" action="" enctype="multipart/form-data">
							<h4><?php 
            _e('Basic Setup', 'prosports');
            ?>
</h4>
							<p><?php 
            _e('Select your timezone and sport to get started.', 'prosports');
            ?>
</p>
							<table class="form-table">
								<tbody>
									<tr valign="top">
										<th scope="row" class="titledesc">
											<label for="timezone_string"><?php 
            _e('Timezone', 'prosports');
            ?>
</label>
										</th>
										<td>
											<select id="timezone_string" name="timezone_string" class="<?php 
            echo $class;
            ?>
">
												<?php 
            $current_offset = get_option('gmt_offset');
            $tzstring = get_option('timezone_string');
            $check_zone_info = true;
            // Remove old Etc mappings. Fallback to gmt_offset.
            if (false !== strpos($tzstring, 'Etc/GMT')) {
                $tzstring = '';
            }
            if (empty($tzstring)) {
                // Create a UTC+- zone if no timezone string exists
                $check_zone_info = false;
                if (0 == $current_offset) {
                    $tzstring = 'UTC+0';
                } elseif ($current_offset < 0) {
                    $tzstring = 'UTC' . $current_offset;
                } else {
                    $tzstring = 'UTC+' . $current_offset;
                }
            }
            echo wp_timezone_choice($tzstring);
            ?>
											</select>
										</td>
									</tr>
									
								</tbody>
							</table>
					        <p class="submit prosports-actions">
					        	<input name="save" class="button-primary" type="submit" value="<?php 
            _e('Save changes', 'prosports');
            ?>
" />
					        	<input type="hidden" name="subtab" id="last_tab" />
					        	<?php 
            wp_nonce_field('prosports-settings');
            ?>
					        </p>
						</form>
					<?php 
        }
        ?>
				</div>
				
			</div>
		</div>
		<?php 
    }

	 function cets_blog_defaults_management_page(){
	 	// Display the defaults that can be set by site admins
	 
	 	global $wpdb;
		
		// only allow site admins to come here.
		if( is_super_admin() == false ) {
			wp_die( __('You do not have permission to access this page.') );
		}
		
		/* translators: date and time format for exact current time, mainly about timezones, see http://php.net/date */
		$timezone_format = _x('Y-m-d G:i:s', 'timezone date format');
		
		
		// process form submission    	
    	if (isset($_POST['action']) && $_POST['action'] == 'update') {
			$this->update_defaults($_POST);
			$updated = true;
    	}
		
		// make sure we're using latest data
		$opt = get_site_option('cets_blog_defaults_options');
		
    	if (isset($updated) && $updated) { ?>
        <div id="message" class="updated fade"><p><?php _e('Options saved.') ?></p></div>
        <?php	} ?>
        
        <h1>New Blog Defaults</h1>
        <form name="blogdefaultsform" action="" method="post">
        <p>Set the defaults for new blog creation. Note that these defaults can still be over-ridden by blog owners.</p>
        <div class="wrap">
        <h2><?php _e('General Settings') ?></h2>
        <table class="form-table">
        <tr valign="top">
        <th scope="row"><?php _e('Blog Title') ?></th>
        <td><input name="blogname" type="text" id="blogname" value="<?php echo($opt['blogname']); ?>" size="40" /><br/>
        <input type="checkbox" name="blogname_flag" value="1" <?php checked('1', $opt[blogname_flag]) ?> /> <?php _e("I understand this will overwrite the user's chosen blog name from the setup page.") ?></td>
        </tr>
        <tr valign="top">
        <th scope="row"><?php _e('Tagline') ?></th>
        <td><input name="blogdescription" type="text" id="blogdescription" style="width: 95%" value="<?php echo($opt['blogdescription']); ?>" size="45" />
        <br />
        <?php _e('In a few words, explain what this blog is about.') ?></td>
        </tr>
		
<!-- Begin Time Zone -->
		<tr>
		<?php
		$current_offset = $opt['gmt_offset'];
		$tzstring = $opt['timezone_string'];
		
		$check_zone_info = true;
		
		// Remove old Etc mappings.  Fallback to gmt_offset.
		if ( false !== strpos($tzstring,'Etc/GMT') )
			$tzstring = '';
		
		if (empty($tzstring)) { // set the Etc zone if no timezone string exists
			$check_zone_info = false;
			if ( 0 == $current_offset )
				$tzstring = 'UTC+0';
			elseif ($current_offset < 0)
				$tzstring = 'UTC' . $current_offset;
			else
				$tzstring = 'UTC+' . $current_offset;
		}
		
		?>
		<th scope="row"><label for="timezone_string"><?php _e('Timezone') ?></label></th>
		<td>
		
		<select id="timezone_string" name="timezone_string">
		<?php echo wp_timezone_choice($tzstring); ?>
		</select>
		
		    <span id="utc-time"><?php printf(__('<abbr title="Coordinated Universal Time">UTC</abbr> time is <code>%s</code>'), date_i18n($timezone_format, false, 'gmt')); ?></span>
		<?php if ($opt['timezone_string']) : ?>
			<span id="local-time"><?php printf(__('Local time is <code>%1$s</code>'), date_i18n($timezone_format)); ?></span>
		<?php endif; ?>
		<br />
		<span class="description"><?php _e('Choose a city in the same timezone as you.'); ?></span>
		<br />
		<span>
		<?php if ($check_zone_info && $tzstring) : ?>
			<?php
			$now = localtime(time(),true);
			if ($now['tm_isdst']) _e('This timezone is currently in daylight savings time.');
			else _e('This timezone is currently in standard time.');
			?>
			<br />
			<?php
			
			if (function_exists('timezone_transitions_get')) {
				$dateTimeZoneSelected = new DateTimeZone($tzstring);
				foreach (timezone_transitions_get($dateTimeZoneSelected) as $tr) {
					if ($tr['ts'] > time()) {
					    $found = true;
						break;
					}
				}
//.........这里部分代码省略.........

    } elseif ($current_offset < 0) {
        $tzstring = 'UTC' . $current_offset;
    } else {
        $tzstring = 'UTC+' . $current_offset;
    }
}
?>
<th scope="row"><label for="timezone_string"><?php 
_e('Timezone');
?>
</label></th>
<td>

<select id="timezone_string" name="timezone_string" aria-describedby="timezone-description">
	<?php 
echo wp_timezone_choice($tzstring, get_user_locale());
?>
</select>

<p class="description" id="timezone-description"><?php 
_e('Choose either a city in the same timezone as you or a UTC timezone offset.');
?>
</p>

<p class="timezone-info">
	<span id="utc-time"><?php 
/* translators: 1: UTC abbreviation, 2: UTC time */
printf(__('Universal time (%1$s) is %2$s.'), '<abbr>' . __('UTC') . '</abbr>', '<code>' . date_i18n($timezone_format, false, true) . '</code>');
?>
</span>
<?php 

 /**
  * add_profile_boxes method
  *
  * Add options HTML to `wp-admin/profile.php` page.
  *
  * @return void Method does not return
  */
 public function add_profile_boxes()
 {
     global $ai1ec_view_helper;
     $user = wp_get_current_user();
     $selected_tz = '';
     if ($user->ID > 0) {
         $selected_tz = $this->user_selected_tz($user->ID);
     }
     $argv = array('tz_selector' => wp_timezone_choice($selected_tz));
     $ai1ec_view_helper->display_admin('box_profile_timezone.php', $argv);
 }

 public static function select_timezone($field, $meta)
 {
     $meta = '' !== $meta ? $meta : $field['std'];
     if ('' === $meta) {
         $meta = cpmb_Meta_Box::timezone_string();
     }
     echo '<select name="', $field['id'], '" id="', $field['id'], '">';
     echo wp_timezone_choice($meta);
     echo '</select>';
 }

 /**
  * Output a select input box.
  *
  * @access public
  * @param array $field
  * @return void
  */
 public function timezone_input($field)
 {
     $field['class'] = isset($field['class']) ? $field['class'] : 'select short';
     $field['value'] = isset($field['value']) ? $field['value'] : '';
     $field['name'] = isset($field['name']) ? $field['name'] : $field['id'];
     // Custom attribute handling
     $custom_attributes = array();
     if (!empty($field['custom_attributes']) && is_array($field['custom_attributes'])) {
         foreach ($field['custom_attributes'] as $attribute => $value) {
             $custom_attributes[] = 'data-' . esc_attr($attribute) . '="' . esc_attr($value) . '"';
         }
     }
     $options = wp_timezone_choice($field['value']);
     $field = $this->field_wrapper_start($field);
     printf('<select id="%s" name="%s" class="%s" %s />%s</select>', esc_attr($field['id']), esc_attr($field['name']), esc_attr($field['class']), implode(' ', $custom_attributes), $options);
     $this->field_wrapper_end($field);
 }