Add backwards-compatible strftime polyfill for PHP 8.1+
This commit is contained in:
Vencislav Atanasov
parent
24d57ee1b5
commit
4b072dc2df
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@ -1,4 +1,7 @@
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<?php
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require 'php-8.1-strftime.php';
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use function PHP81_BC\strftime;
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function parseData($config, $data) {
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$languages = array(
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'en' => array(
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@ -0,0 +1,217 @@
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<?php
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namespace PHP81_BC;
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use DateTime;
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use DateTimeZone;
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use DateTimeInterface;
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use Exception;
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use IntlDateFormatter;
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use IntlGregorianCalendar;
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use InvalidArgumentException;
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/**
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* Locale-formatted strftime using IntlDateFormatter (PHP 8.1 compatible)
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* This provides a cross-platform alternative to strftime() for when it will be removed from PHP.
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* Note that output can be slightly different between libc sprintf and this function as it is using ICU.
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*
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* Usage:
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* use function \PHP81_BC\strftime;
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* echo strftime('%A %e %B %Y %X', new \DateTime('2021-09-28 00:00:00'), 'fr_FR');
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*
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* Original use:
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* \setlocale(LC_TIME, 'fr_FR.UTF-8');
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* echo \strftime('%A %e %B %Y %X', strtotime('2021-09-28 00:00:00'));
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*
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* @param string $format Date format
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* @param integer|string|DateTime $timestamp Timestamp
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* @return string
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* @author BohwaZ <https://bohwaz.net/>
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*/
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function strftime (string $format, $timestamp = null, ?string $locale = null) : string {
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if (!($timestamp instanceof DateTimeInterface)) {
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$timestamp = is_int($timestamp) ? '@' . $timestamp : (string) $timestamp;
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try {
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$timestamp = new DateTime($timestamp);
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} catch (Exception $e) {
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throw new InvalidArgumentException('$timestamp argument is neither a valid UNIX timestamp, a valid date-time string or a DateTime object.', 0, $e);
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}
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}
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$timestamp->setTimezone(new DateTimeZone(date_default_timezone_get()));
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if (empty($locale)) {
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// get current locale
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$locale = setlocale(LC_TIME, '0');
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}
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// remove trailing part not supported by ext-intl locale
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$locale = preg_replace('/[^\w-].*$/', '', $locale);
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$intl_formats = [
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'%a' => 'EEE', // An abbreviated textual representation of the day Sun through Sat
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'%A' => 'EEEE', // A full textual representation of the day Sunday through Saturday
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'%b' => 'MMM', // Abbreviated month name, based on the locale Jan through Dec
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'%B' => 'MMMM', // Full month name, based on the locale January through December
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'%h' => 'MMM', // Abbreviated month name, based on the locale (an alias of %b) Jan through Dec
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];
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$intl_formatter = function (DateTimeInterface $timestamp, string $format) use ($intl_formats, $locale) {
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$tz = $timestamp->getTimezone();
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$date_type = IntlDateFormatter::FULL;
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$time_type = IntlDateFormatter::FULL;
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$pattern = '';
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switch ($format) {
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// %c = Preferred date and time stamp based on locale
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// Example: Tue Feb 5 00:45:10 2009 for February 5, 2009 at 12:45:10 AM
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case '%c':
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$date_type = IntlDateFormatter::LONG;
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$time_type = IntlDateFormatter::SHORT;
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break;
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// %x = Preferred date representation based on locale, without the time
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// Example: 02/05/09 for February 5, 2009
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case '%x':
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$date_type = IntlDateFormatter::SHORT;
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$time_type = IntlDateFormatter::NONE;
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break;
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// Localized time format
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case '%X':
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$date_type = IntlDateFormatter::NONE;
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$time_type = IntlDateFormatter::MEDIUM;
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break;
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default:
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$pattern = $intl_formats[$format];
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}
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// In October 1582, the Gregorian calendar replaced the Julian in much of Europe, and
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// the 4th October was followed by the 15th October.
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// ICU (including IntlDateFormattter) interprets and formats dates based on this cutover.
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// Posix (including strftime) and timelib (including DateTimeImmutable) instead use
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// a "proleptic Gregorian calendar" - they pretend the Gregorian calendar has existed forever.
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// This leads to the same instants in time, as expressed in Unix time, having different representations
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// in formatted strings.
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// To adjust for this, a custom calendar can be supplied with a cutover date arbitrarily far in the past.
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$calendar = IntlGregorianCalendar::createInstance();
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$calendar->setGregorianChange(PHP_INT_MIN);
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return (new IntlDateFormatter($locale, $date_type, $time_type, $tz, $calendar, $pattern))->format($timestamp);
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};
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// Same order as https://www.php.net/manual/en/function.strftime.php
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$translation_table = [
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// Day
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'%a' => $intl_formatter,
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'%A' => $intl_formatter,
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'%d' => 'd',
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'%e' => function ($timestamp) {
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return sprintf('% 2u', $timestamp->format('j'));
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},
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'%j' => function ($timestamp) {
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// Day number in year, 001 to 366
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return sprintf('%03d', $timestamp->format('z')+1);
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},
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'%u' => 'N',
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'%w' => 'w',
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// Week
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'%U' => function ($timestamp) {
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// Number of weeks between date and first Sunday of year
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$day = new DateTime(sprintf('%d-01 Sunday', $timestamp->format('Y')));
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return sprintf('%02u', 1 + ($timestamp->format('z') - $day->format('z')) / 7);
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},
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'%V' => 'W',
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'%W' => function ($timestamp) {
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// Number of weeks between date and first Monday of year
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$day = new DateTime(sprintf('%d-01 Monday', $timestamp->format('Y')));
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return sprintf('%02u', 1 + ($timestamp->format('z') - $day->format('z')) / 7);
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},
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// Month
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'%b' => $intl_formatter,
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'%B' => $intl_formatter,
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'%h' => $intl_formatter,
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'%m' => 'm',
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// Year
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'%C' => function ($timestamp) {
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// Century (-1): 19 for 20th century
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return floor($timestamp->format('Y') / 100);
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},
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'%g' => function ($timestamp) {
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return substr($timestamp->format('o'), -2);
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},
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'%G' => 'o',
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'%y' => 'y',
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'%Y' => 'Y',
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// Time
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'%H' => 'H',
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'%k' => function ($timestamp) {
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return sprintf('% 2u', $timestamp->format('G'));
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},
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'%I' => 'h',
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'%l' => function ($timestamp) {
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return sprintf('% 2u', $timestamp->format('g'));
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},
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'%M' => 'i',
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'%p' => 'A', // AM PM (this is reversed on purpose!)
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'%P' => 'a', // am pm
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'%r' => 'h:i:s A', // %I:%M:%S %p
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'%R' => 'H:i', // %H:%M
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'%S' => 's',
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'%T' => 'H:i:s', // %H:%M:%S
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'%X' => $intl_formatter, // Preferred time representation based on locale, without the date
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// Timezone
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'%z' => 'O',
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'%Z' => 'T',
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// Time and Date Stamps
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'%c' => $intl_formatter,
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'%D' => 'm/d/Y',
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'%F' => 'Y-m-d',
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'%s' => 'U',
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'%x' => $intl_formatter,
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];
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$out = preg_replace_callback('/(?<!%)%([_#-]?)([a-zA-Z])/', function ($match) use ($translation_table, $timestamp) {
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$prefix = $match[1];
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$char = $match[2];
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$pattern = '%'.$char;
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if ($pattern == '%n') {
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return "\n";
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} elseif ($pattern == '%t') {
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return "\t";
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}
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if (!isset($translation_table[$pattern])) {
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throw new InvalidArgumentException(sprintf('Format "%s" is unknown in time format', $pattern));
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}
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$replace = $translation_table[$pattern];
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if (is_string($replace)) {
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$result = $timestamp->format($replace);
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} else {
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$result = $replace($timestamp, $pattern);
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}
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switch ($prefix) {
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case '_':
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// replace leading zeros with spaces but keep last char if also zero
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return preg_replace('/\G0(?=.)/', ' ', $result);
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case '#':
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case '-':
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// remove leading zeros but keep last char if also zero
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return preg_replace('/^0+(?=.)/', '', $result);
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}
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return $result;
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}, $format);
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$out = str_replace('%%', '%', $out);
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return $out;
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}
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