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To get an array of all time zones with their time offset from Greenwich, use the following function:

function get_time_timezones()
{
	$zones_array = array();
	$timestamp = time();
	
	$default_timezone = date_default_timezone_get();
	$timezone_list = timezone_identifiers_list();
	
	foreach ($timezone_list as $zone)
	{
		date_default_timezone_set($zone);
		$zones_array[$zone] = date('P', $timestamp);
	}
	
	date_default_timezone_set($default_timezone);
	
	return $zones_array;
}

2017-12-20 Pavel PHP CommentsNo Comments

Convert human readable date to unix timestamp date

To convert a date in the format YYYY-MM-DD HH:MM:SS to a purely numeric date (i.e., a timestamp), you need to use the MySQL function UNIX_TIMESTAMP.

Example:

SELECT UNIX_TIMESTAMP('2017-05-22 14:20:05') `new_date`

Result — 1495452005

The same query, but without the time part:

SELECT UNIX_TIMESTAMP('2017-05-22') `new_date`

Result — 1495400400

2017-08-30 Pavel MySQL CommentsNo Comments

How to update part of the content in Yii2 using JavaScripit and Pjax

The first thing we need to do is include "Pjax" itself:

use yiiwidgetsPjax;

Next, wrap the desired content in the Pjax widget. For example:

<?php Pjax::begin([ 'id' => 'pjaxContent'
]); ?>

Content here

<?php Pjax::end(); ?>

2017-08-30 Pavel Yii2 CommentsNo Comments

How to set default parameters for a widget in Yii2

To set default parameters for a widget in Yii2, you need to use the dependency injection container.

Example with DatePicker:

Yii::$container -> set('yiijuiDatePicker', [
	'language' => 'en-US',
]);

The first parameter in set is the class name, and the second is the array of parameters to configure. This way, we can preconfigure our widget properly from the start.

2017-08-30 Pavel Yii2 CommentsNo Comments

How to find out tomorrow's or yesterday's date in timestamp format in PHP?

To get yesterday’s or tomorrow’s date in timestamp format (PHP), you need to use the standard PHP function "strtotime".

For example, let’s display the time of the current date at 00:00:00 (zero hours, zero minutes, zero seconds):

$t = strtotime('00:00:00');
echo 'Timestamp: '.$t;
echo 'Datetime: '.date('Y-m-d H:i:s',$t);