PHP timezone_transitions_get函数代码示例

 /**
  * Seek to the previous timezone transition
  *
  * @throws  lang.IllegalArgumentException if timezone has no transitions
  */
 public function previous()
 {
     $ts = $this->date->getTime();
     foreach (timezone_transitions_get($this->tz->getHandle()) as $t) {
         if ($t['ts'] >= $ts) {
             break;
         }
         $last = $t;
     }
     if (!isset($t)) {
         throw new IllegalArgumentException('Timezone ' . $this->tz->getName() . ' does not have DST transitions.');
     }
     $this->date = new Date($last['ts'], $this->date->getTimeZone());
     $this->isDst = $last['isdst'];
     $this->offset = $last['offset'];
     $this->abbr = $last['abbr'];
 }

 /**
  * The magic function that does everything.
  * 
  **/
 function magic2()
 {
     if (!in_array($this->tz_file, $this->valid_names)) {
         trigger_error(sprintf('Bad timezone name given: %s', $this->tz_file), E_USER_ERROR);
     }
     // TODO: move msg to lang
     $tz_obj = timezone_open($this->tz_file);
     $tz_data = timezone_transitions_get($tz_obj);
     $last = reset($tz_data);
     $now = time();
     foreach ($tz_data as $transition) {
         if ($transition['ts'] > $now) {
             $this->gmt_offset = $last['offset'];
             $this->abba = $last['abbr'];
             $this->next_update = $transition['ts'];
             return;
         } else {
             $last = $transition;
         }
     }
     // default to the last entry if we get here
     $this->gmt_offset = $last['offset'];
     $this->abba = $last['abbr'];
 }

    /**
     * @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.........

var_dump(date_format($dt, 'Y-m-d H:i:s'));
var_dump(timezone_name_from_abbr("CET"));
var_dump(timezone_name_from_abbr("", 3600, 0));
$tz = timezone_open("Asia/Shanghai");
var_dump(timezone_name_get($tz));
// Create two timezone objects, one for Taipei (Taiwan) and one for
// Tokyo (Japan)
$dateTimeZoneTaipei = timezone_open("Asia/Taipei");
$dateTimeZoneJapan = timezone_open("Asia/Tokyo");
// Create two DateTime objects that will contain the same Unix timestamp, but
// have different timezones attached to them.
$dateTimeTaipei = date_create("2008-08-08", $dateTimeZoneTaipei);
$dateTimeJapan = date_create("2008-08-08", $dateTimeZoneJapan);
var_dump(date_offset_get($dateTimeTaipei));
var_dump(date_offset_get($dateTimeJapan));
$tz = timezone_open("Asia/Shanghai");
var_dump(timezone_name_get($tz));
$timezone = timezone_open("CET");
$transitions = timezone_transitions_get($timezone);
var_dump($transitions[0]['ts']);
var_dump($transitions[0]['offset']);
var_dump($transitions[0]['isdst']);
var_dump($transitions[0]['abbr']);
$tz = timezone_open("EDT");
var_dump(timezone_name_get($tz));
$tz = timezone_open("PST");
var_dump(timezone_name_get($tz));
$tz = timezone_open("CHAST");
var_dump(timezone_name_get($tz));
var_dump((bool) timezone_version_get());
var_dump(timezone_open('sdf'));

// define some classes
class classWithToString
{
    public function __toString()
    {
        return "Class A object";
    }
}
class classWithoutToString
{
}
// heredoc string
$heredoc = <<<EOT
hello world
EOT;
// add arrays
$index_array = array(1, 2, 3);
$assoc_array = array('one' => 1, 'two' => 2);
// resource
$file_handle = fopen(__FILE__, 'r');
//array of values to iterate over
$inputs = array('int 0' => 0, 'int 1' => 1, 'int 12345' => 12345, 'int -12345' => -12345, 'float 10.5' => 10.5, 'float -10.5' => -10.5, 'float .5' => 0.5, 'empty array' => array(), 'int indexed array' => $index_array, 'associative array' => $assoc_array, 'nested arrays' => array('foo', $index_array, $assoc_array), 'uppercase NULL' => NULL, 'lowercase null' => null, 'lowercase true' => true, 'lowercase false' => false, 'uppercase TRUE' => TRUE, 'uppercase FALSE' => FALSE, 'empty string DQ' => "", 'empty string SQ' => '', 'string DQ' => "string", 'string SQ' => 'string', 'mixed case string' => "sTrInG", 'heredoc' => $heredoc, 'instance of classWithToString' => new classWithToString(), 'instance of classWithoutToString' => new classWithoutToString(), 'undefined var' => @$undefined_var, 'unset var' => @$unset_var, 'resource' => $file_handle);
foreach ($inputs as $variation => $object) {
    echo "\n-- {$variation} --\n";
    var_dump(timezone_transitions_get($object));
}
// closing the resource
fclose($file_handle);
?>
===DONE===

function eventespresso_ddtimezone($event_id = 0)
{
    global $wpdb;
    $tz_event = $wpdb->get_var($wpdb->prepare("SELECT timezone_string FROM " . EVENTS_DETAIL_TABLE . " WHERE id = '" . $event_id . "'"));
    $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) {
            $tzstring = 'UTC+0';
        } elseif ($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 
    }
}

<?php

/* Prototype  : array timezone_transitions_get  ( DateTimeZone $object, [ int $timestamp_begin  [, int $timestamp_end  ]]  )
 * Description: Returns all transitions for the timezone
 * Source code: ext/date/php_date.c
 * Alias to functions: DateTimeZone::getTransitions()
 */
//Set the default time zone
date_default_timezone_set("GMT");
$tz = timezone_open("Europe/London");
echo "*** Testing timezone_transitions_get() : error conditions ***\n";
echo "\n-- Testing timezone_transitions_get() function with zero arguments --\n";
var_dump(timezone_transitions_get());
echo "\n-- Testing timezone_transitions_get() function with more than expected no. of arguments --\n";
$timestamp_begin = mktime(0, 0, 0, 1, 1, 1972);
$timestamp_end = mktime(0, 0, 0, 1, 1, 1975);
$extra_arg = 99;
var_dump(timezone_transitions_get($tz, $timestamp_begin, $timestamp_end, $extra_arg));
echo "\n-- Testing timezone_transitions_get() function with an invalid values for \$object argument --\n";
$invalid_obj = new stdClass();
var_dump(timezone_transitions_get($invalid_obj));
$invalid_obj = 10;
var_dump(timezone_transitions_get($invalid_obj));
$invalid_obj = null;
var_dump(timezone_transitions_get($invalid_obj));
?>
===DONE===

 /**
  * Retrieve whether the timezone does have DST/non-DST mode
  *
  * @return  bool
  */
 public function hasDst()
 {
     return (bool) sizeof(timezone_transitions_get($this->tz));
 }

	 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.........

 /**
  * @param string|DateTimeInterface $value
  * @param DateTimeZone             $timeZone
  * @param string                   $message
  */
 public static function isDayLightSavingTime($value, DateTimeZone $timeZone, $message = '')
 {
     $value = self::convertToDateTime($value);
     $transitions = timezone_transitions_get($timeZone, $value->getTimestamp(), $value->getTimestamp());
     if (is_array($transitions) && !empty($transitions)) {
         foreach ($transitions as $transition) {
             if (0 == $transition['isdst']) {
                 throw new AssertionException($message ? $message : self::ASSERT_IS_DST);
             }
         }
     }
 }

    {
        return "Class A object";
    }
}
class classWithoutToString
{
}
// heredoc string
$heredoc = <<<EOT
hello world
EOT;
// add arrays
$index_array = array(1, 2, 3);
$assoc_array = array('one' => 1, 'two' => 2);
// resource
$file_handle = fopen(__FILE__, 'r');
//array of values to iterate over
$inputs = array('int 0' => 0, 'int 1' => 1, 'int 12345' => 12345, 'int -12345' => -12345, 'float 10.5' => 10.5, 'float -10.5' => -10.5, 'float .5' => 0.5, 'empty array' => array(), 'int indexed array' => $index_array, 'associative array' => $assoc_array, 'nested arrays' => array('foo', $index_array, $assoc_array), 'uppercase NULL' => NULL, 'lowercase null' => null, 'lowercase true' => true, 'lowercase false' => false, 'uppercase TRUE' => TRUE, 'uppercase FALSE' => FALSE, 'empty string DQ' => "", 'empty string SQ' => '', 'string DQ' => "string", 'string SQ' => 'string', 'mixed case string' => "sTrInG", 'heredoc' => $heredoc, 'instance of classWithToString' => new classWithToString(), 'instance of classWithoutToString' => new classWithoutToString(), 'undefined var' => @$undefined_var, 'unset var' => @$unset_var, 'resource' => $file_handle);
$tz = timezone_open("Europe/London");
$timestamp_end = mktime(0, 0, 0, 1, 1, 1975);
foreach ($inputs as $variation => $timestamp_begin) {
    echo "\n-- {$variation} --\n";
    $tran = timezone_transitions_get($tz, $timestamp_begin, $timestamp_end);
    var_dump(gettype($tran));
    var_dump(count($tran));
}
// closing the resource
fclose($file_handle);
?>
===DONE===

<?php

/* Prototype  : array timezone_transitions_get  ( DateTimeZone $object, [ int $timestamp_begin  [, int $timestamp_end  ]]  )
 * Description: Returns all transitions for the timezone
 * Source code: ext/date/php_date.c
 * Alias to functions: DateTimeZone::getTransitions()
 */
echo "*** Testing timezone_transitions_get() : basic functionality ***\n";
//Set the default time zone
date_default_timezone_set("Europe/London");
// Create a DateTimeZone object
$tz = timezone_open("Europe/London");
$tran = timezone_transitions_get($tz);
echo "\n-- Get all 60s transitions --\n";
$tran = timezone_transitions_get($tz, -306972000, -37241999);
var_dump(gettype($tran));
echo "\n-- Total number of transitions: " . count($tran) . " --\n";
echo "\n-- Format a sample entry pfor Spring 1963 --\n";
var_dump($tran[6]);
?>
===DONE===

<?php 
    if ($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()) {
                    $found = true;
                    break;
                }
            }
            if (isset($found) && $found === true) {
                echo ' ';
                $message = $tr['isdst'] ? __('Daylight savings time begins on: <code>%s</code>.') : __('Standard time begins  on: <code>%s</code>.');
                printf($message, date_i18n(get_option('date_format') . ' ' . get_option('time_format'), $tr['ts']));
            } else {
                _e('This timezone does not observe daylight savings time.');
            }
        }
        ?>
	</span>

            $timezone_string = 'Etc/GMT+' . abs($_gmt_offset);
        }
        unset($_gmt_offset);
    }
    // Build the new selector
    $_time_options = array('timezone_string' => array('title' => __('Time zone'), 'type' => 'select', 'options' => wp_timezone_choice($timezone_string), 'note' => array(__('Choose a city in the same time zone as you.'), sprintf(__('<abbr title="Coordinated Universal Time">UTC</abbr> time is <code>%s</code>'), bb_gmdate_i18n(bb_get_datetime_formatstring_i18n(), bb_current_time())), sprintf(__('Local time is <code>%s</code>'), bb_datetime_format_i18n(bb_current_time())))));
    $_now = localtime(bb_current_time(), true);
    if ($now['tm_isdst']) {
        $_time_options['timezone_string']['note'][] = __('This time zone is currently in daylight savings time.');
    } else {
        $_time_options['timezone_string']['note'][] = __('This time zone is currently in standard time.');
    }
    if (function_exists('timezone_transitions_get')) {
        $timezone_object = new DateTimeZone($timezone_string);
        $found_transition = false;
        foreach (timezone_transitions_get($timezone_object) as $timezone_transition) {
            if ($timezone_transition['ts'] > time()) {
                $note = $timezone_transition['isdst'] ? __('Daylight savings time begins on <code>%s</code>') : __('Standard time begins on <code>%s</code>');
                $_time_options['timezone_string']['note'][] = sprintf($note, bb_gmdate_i18n(bb_get_datetime_formatstring_i18n(), $timezone_transition['ts'], false));
                break;
            }
        }
    }
    $time_options = array_merge($_time_options, $time_options);
} else {
    // Tidy up the old style dropdown
    $time_options['gmt_offset']['note'] = array(1 => sprintf(__('<abbr title="Coordinated Universal Time">UTC</abbr> %s is <code>%s</code>'), $time_options['gmt_offset']['options'][$gmt_offset], bb_datetime_format_i18n(bb_current_time())), 2 => __('Unfortunately, you have to manually update this for Daylight Savings Time.'));
    if ($gmt_offset) {
        $time_options['gmt_offset']['note'][0] = sprintf(__('<abbr title="Coordinated Universal Time">UTC</abbr> time is <code>%s</code>'), bb_gmdate_i18n(bb_get_datetime_formatstring_i18n(), bb_current_time(), true));
        ksort($time_options['gmt_offset']['note']);
    }

    $now = localtime(time(), true);
    if ($now['tm_isdst']) {
        _e('This timezone is currently in daylight saving time.');
    } else {
        _e('This timezone is currently in standard time.');
    }
    ?>
	<br />
	<?php 
    $allowed_zones = timezone_identifiers_list();
    if (in_array($tzstring, $allowed_zones)) {
        $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.