Mo Elzubeir
88 lines
2.1 KiB
PHP
88 lines
2.1 KiB
PHP
<?php
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namespace Common\Util\Converter;
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/**
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* Class DateConverter
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* @package Common\Util\Converter
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*/
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class DateConverter
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{
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/**
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* Map between date format and proper regular patterns.
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*
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* @var string[]
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*/
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private static $datePatternsMap = [
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'Y-m-d' => '\d{4}-\d{2}-\d{2}',
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'Y-m-d H:i:s' => '\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}',
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'Y-m-d\TH:i:sP' => '\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(:?(:?\+|\-)\d{2}:\d{2}|\w)',
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];
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/**
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* Cache of formats for specified dates.
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*
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* @var string
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*/
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private static $dateFormatCache = [];
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/**
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* Check that specified string can be converted to \DateTime instance.
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*
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* @param string $date Date string.
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*
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* @return boolean
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*/
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public static function can($date)
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{
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return self::getFormat($date) !== null;
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}
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/**
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* @param string $date Date string.
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*
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* @return \DateTime|false
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*/
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public static function convert($date)
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{
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$format = self::getFormat($date);
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if ($format === null) {
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throw new \InvalidArgumentException('Invalid date '. $date);
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}
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return date_create_from_format($format, $date);
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}
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/**
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* Get proper date format for specified date string.
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*
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* @param string $date Date string.
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*
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* @return string|null
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*/
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private static function getFormat($date)
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{
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if (! is_string($date)) {
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return false;
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}
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if (! isset(self::$dateFormatCache[$date])) {
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self::$dateFormatCache[$date] = null;
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// Check specified date against all available patterns and find
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// proper format.
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foreach (self::$datePatternsMap as $format => $pattern) {
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if ((preg_match('/^' . $pattern . '$/', $date) === 1)
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&& (date_create_from_format($format, $date) !== false)) {
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self::$dateFormatCache[$date] = $format;
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break;
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}
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}
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}
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return self::$dateFormatCache[$date];
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}
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}
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